diff --git a/CMakeLists.txt b/CMakeLists.txt
index f2fe7fd414..162763621c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -346,7 +346,7 @@ if(WIN32)
         if (DEFINED ENV{WindowsSdkDir} AND DEFINED ENV{WindowsSDKVersion})
             set(WIN10SDK_INCLUDE_PATH "$ENV{WindowsSdkDir}/Include/$ENV{WindowsSDKVersion}")
         else ()
-            set(WIN10SDK_INCLUDE_PATH "C:/Program Files (x86)/Windows Kits/10/Include/10.0.22000.0")
+            set(WIN10SDK_INCLUDE_PATH "C:/Program Files (x86)/Windows Kits/10/Include/10.0.26100.0")
         endif ()
         if (NOT EXISTS "${WIN10SDK_INCLUDE_PATH}/winrt/windows.graphics.printing3d.h")
             message("${WIN10SDK_INCLUDE_PATH}/winrt/windows.graphics.printing3d.h was not found")
diff --git a/README.md b/README.md
index b70b7cc431..59fb76034b 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,7 @@ If you come across any of these in search results, please <b>report them</b> as
   Use varied infill [patterns](https://github.com/OrcaSlicer/OrcaSlicer/wiki/strength_settings_patterns) and accurate hole shapes for improved clarity.
 - **[Overhang](https://github.com/OrcaSlicer/OrcaSlicer/wiki/quality_settings_overhangs) and [Support Optimization](https://github.com/OrcaSlicer/OrcaSlicer/wiki#support-settings)**  
   Modify geometry for printable overhangs with precise support placement.
-- **[Granular Controls](https://github.com/OrcaSlicer/OrcaSlicer/wiki#process-settings and Customization)**  
+- **[Granular Controls and Customization](https://github.com/OrcaSlicer/OrcaSlicer/wiki#process-settings)**  
   Fine-tune print speed, layer height, pressure, and temperature with precision.
 - **Network Printer Support**  
   Seamless integration with Klipper, PrusaLink, and OctoPrint for remote control.
diff --git a/localization/i18n/pt_BR/OrcaSlicer_pt_BR.po b/localization/i18n/pt_BR/OrcaSlicer_pt_BR.po
index d52a68ee1b..73fcdb50ea 100644
--- a/localization/i18n/pt_BR/OrcaSlicer_pt_BR.po
+++ b/localization/i18n/pt_BR/OrcaSlicer_pt_BR.po
@@ -2057,7 +2057,7 @@ msgid "Replace the selected part with new STL"
 msgstr "Substituir a peça selecionada por novo STL"
 
 msgid "Replace all with STL"
-msgstr ""
+msgstr "Substituir tudo por STL"
 
 msgid "Replace all selected parts with STL from folder"
 msgstr "Substituir todas peças selecionadas com STL da pasta"
@@ -3406,7 +3406,7 @@ msgid "Step"
 msgstr "Passo"
 
 msgid "Unmapped"
-msgstr ""
+msgstr "Não mapeado"
 
 msgid ""
 "Upper half area:  Original\n"
@@ -4267,7 +4267,7 @@ msgid "Auto Check: Material"
 msgstr "Verificação Automática: Material"
 
 msgid "Live View Camera Calibration"
-msgstr ""
+msgstr "Calibração da Câmera ao Vivo"
 
 msgid "Waiting for heatbed to reach target temperature"
 msgstr "Aguardando mesa aquecida atingir a temperatura desejada"
@@ -6785,7 +6785,7 @@ msgid "Monitor if the waste is piled up in the purge chute."
 msgstr "Verifique se os resíduos estão se acumulando na calha de purga."
 
 msgid "Nozzle Clumping Detection"
-msgstr "Detecção de acúmulo no bico"
+msgstr "Detecção de Aglomeração no Bico"
 
 msgid "Check if the nozzle is clumping by filaments or other foreign objects."
 msgstr ""
@@ -8037,10 +8037,12 @@ msgid "All"
 msgstr "Todos"
 
 msgid "Auto flush after changing..."
-msgstr ""
+msgstr "Auto purga depois da troca..."
 
 msgid "Auto calculate flushing volumes when selected values changed"
 msgstr ""
+"Calcula automaticamente os volumes de purga quando os valores selecionados "
+"são alterados"
 
 msgid "Auto arrange plate after cloning"
 msgstr "Organizar automaticamente a placa após a clonagem"
@@ -8100,7 +8102,7 @@ msgid "If enabled, reverses the direction of zoom with mouse wheel."
 msgstr "Se ativo, inverte a direção de zoom com a roda do mouse."
 
 msgid "Clear my choice on..."
-msgstr ""
+msgstr "Limpar minha escolha em..."
 
 msgid "Unsaved projects"
 msgstr "Projetos não salvos"
@@ -8158,7 +8160,7 @@ msgid "Update built-in Presets automatically."
 msgstr "Atualizar automaticamente Predefinições integradas."
 
 msgid "Network plugin"
-msgstr ""
+msgstr "Plugin de rede"
 
 msgid "Enable network plugin"
 msgstr "Ativar plugin de rede"
@@ -8882,15 +8884,20 @@ msgid ""
 "You have selected both external and AMS filaments for an extruder. You will "
 "need to manually switch the external filament during printing."
 msgstr ""
+"Você selecionou filamentos externos e AMS para uma extrusora. Será "
+"necessário trocar manualmente o filamento externo durante a impressão."
 
 msgid ""
 "TPU 90A/TPU 85A is too soft and does not support automatic Flow Dynamics "
 "calibration."
-msgstr ""
+msgstr "TPU 90A/TPU 85A é muito mole e não suporta calibração automática de "
+"Dinâmica de Fluxo."
 
 msgid ""
 "Set dynamic flow calibration to 'OFF' to enable custom dynamic flow value."
 msgstr ""
+"Desative a calibração de fluxo dinâmico para habilitar o valor de fluxo "
+"dinâmico personalizado."
 
 msgid "This printer does not support printing all plates."
 msgstr "Esta impressora não suporta a imprimir todas as placas."
@@ -8899,6 +8906,9 @@ msgid ""
 "Please cold pull before printing TPU to avoid clogging. You may use cold "
 "pull maintenance on the printer."
 msgstr ""
+"Recomenda-se realizar um processo de 'cold pull' antes de imprimir em TPU "
+"para evitar entupimentos. Você pode utilizar esse processo de manutenção na "
+"impressora."
 
 msgid "High chamber temperature is required. Please close the door."
 msgstr "É necessária uma temperatura elevada na câmara. Feche a porta."
@@ -8916,8 +8926,9 @@ msgid "click to retry"
 msgstr "clique para tentar novamente"
 
 msgid "Upload file timeout, please check if the firmware version supports it."
-msgstr "Limite de tempo de envio exedido, verifique se a versão do firmware "
-"tem suporte."
+msgstr ""
+"Limite de tempo de envio de arquivo excedido, verifique se a versão do "
+"firmware tem suporte."
 
 msgid ""
 "No available external storage was obtained. Please confirm and try again."
@@ -8936,6 +8947,8 @@ msgid ""
 "Please check the network and try again, You can restart or update the "
 "printer if the issue persists."
 msgstr ""
+"Verifique a rede e tente novamente. Se o problema persistir, você pode "
+"reiniciar ou atualizar a impressora."
 
 msgid "Sending..."
 msgstr "Enviando…"
@@ -8952,7 +8965,7 @@ msgid "Sending failed, please try again!"
 msgstr "Falha no envio, tente novamente!"
 
 msgid "Connection failed. Click the icon to retry"
-msgstr ""
+msgstr "Falha na coexão.  Clique no icon para tentar novamente"
 
 msgid "Cannot send the print task when the upgrade is in progress"
 msgstr ""
@@ -9653,7 +9666,7 @@ msgid "Wipe tower parameters"
 msgstr "Parâmetros da torre de limpeza"
 
 msgid "Multi Filament"
-msgstr ""
+msgstr "Multi Filamento"
 
 msgid "Tool change parameters with single extruder MM printers"
 msgstr ""
@@ -9723,7 +9736,7 @@ msgid "Timelapse G-code"
 msgstr "G-code de timelapse"
 
 msgid "Clumping Detection G-code"
-msgstr ""
+msgstr "G-code para detecção de aglomeração"
 
 msgid "Change filament G-code"
 msgstr "G-code de mudança de filamento"
@@ -9862,11 +9875,11 @@ msgstr "Tem certeza de %1% a predefinição selecionada?"
 
 #, c-format, boost-format
 msgid "Left: %s"
-msgstr ""
+msgstr "Esquerda: %s"
 
 #, c-format, boost-format
 msgid "Right: %s"
-msgstr ""
+msgstr "Direita: %s"
 
 msgid "Click to reset current value and attach to the global value."
 msgstr "Clique para redefinir o valor atual e anexá-lo ao valor global."
@@ -10102,25 +10115,25 @@ msgid "The configuration is up to date."
 msgstr "A configuração está atualizada."
 
 msgid "Open Wiki for more information >"
-msgstr ""
+msgstr "Abra o Wiki para mais informações >"
 
 msgid "OBJ file import color"
 msgstr "Importar cor de arquivo Obj"
 
 msgid "Some faces don't have color defined."
-msgstr ""
+msgstr "Algumas faces não têm a cor definida."
 
 msgid "MTL file exist error, could not find the material:"
 msgstr ""
 
 msgid "Please check OBJ or MTL file."
-msgstr ""
+msgstr "Verifique o arquivo OBJ ou MTL."
 
 msgid "Specify number of colors:"
 msgstr "Especifique a quantidade de cores:"
 
 msgid "Enter or click the adjustment button to modify number again"
-msgstr ""
+msgstr "Digite ou clique no botão de ajuste para modificar o número novamente"
 
 msgid "Recommended "
 msgstr "Recomendado "
@@ -10129,10 +10142,10 @@ msgid "view"
 msgstr ""
 
 msgid "Current filament colors"
-msgstr ""
+msgstr "Cores de filamento atuais"
 
 msgid "Matching"
-msgstr ""
+msgstr "Correspondendo"
 
 msgid "Quick set"
 msgstr ""
@@ -10147,7 +10160,7 @@ msgid "Append"
 msgstr "Adicionar"
 
 msgid "Append to existing filaments"
-msgstr ""
+msgstr "Adicionar aos filamentos existentes"
 
 msgid "Reset mapped extruders."
 msgstr "Redefinir extrusoras mapeadas."
@@ -10389,6 +10402,9 @@ msgid ""
 "changed or filaments changed. You could disable the auto-calculate in Orca "
 "Slicer > Preferences"
 msgstr ""
+"O Orca recalculará seus volumes de purga toda vez que a cor dos filamentos "
+"ou os filamentos forem alterados. Você pode desativar o cálculo automático "
+"em OrcaSlicer > Preferências"
 
 msgid "Flushing volume (mm³) for each filament pair."
 msgstr "Volume de purga (mm³) para cada par de filamentos."
@@ -10405,10 +10421,10 @@ msgid "Re-calculate"
 msgstr "Recalcular"
 
 msgid "Left extruder"
-msgstr ""
+msgstr "Extrusora esquerda"
 
 msgid "Right extruder"
-msgstr ""
+msgstr "Extrusora direita"
 
 msgid "Multiplier"
 msgstr "Multiplicador"
@@ -10417,7 +10433,7 @@ msgid "Flushing volumes for filament change"
 msgstr "Volumes de purga para troca de filamento"
 
 msgid "Please choose the filament colour"
-msgstr ""
+msgstr "Escolha a cor do filamento"
 
 msgid ""
 "Windows Media Player is required for this task! Do you want to enable "
@@ -10732,19 +10748,27 @@ msgid ""
 "Try the following methods to update the connection parameters and reconnect "
 "to the printer."
 msgstr ""
+"Tente os seguintes métodos para atualizar os parâmetros de conexão e "
+"reconectar à impressora."
 
 msgid "1. Please confirm Orca Slicer and your printer are in the same LAN."
 msgstr ""
+"1. Confirme se o Orca Slicer e sua impressora estão na mesma rede local."
 
 msgid ""
 "2. If the IP and Access Code below are different from the actual values on "
 "your printer, please correct them."
 msgstr ""
+"2. Se o IP e o Código de Acesso abaixo forem diferentes dos valores reais da "
+"sua impressora, corrija-os."
 
 msgid ""
 "3. Please obtain the device SN from the printer side; it is usually found in "
 "the device information on the printer screen."
 msgstr ""
+"3. Obtenha o número de série (SN) do dispositivo na própria impressora; "
+"geralmente ele pode ser encontrado nas informações do dispositivo na tela da "
+"impressora."
 
 msgid "IP"
 msgstr "IP"
@@ -10800,7 +10824,7 @@ msgstr ""
 "por favor passe para o passo 3 para resolver problemas de rede"
 
 msgid "Connection failed! Please refer to the wiki page."
-msgstr ""
+msgstr "Falha na conexão! Consulte a página da wiki."
 
 msgid "sending failed"
 msgstr "falha no envio"
@@ -10809,9 +10833,11 @@ msgid ""
 "Failed to send. Click Retry to attempt sending again. If retrying does not "
 "work, please check the reason."
 msgstr ""
+"Falha ao enviar. Clique em Tentar Novamente para tentar enviar de novo. Se "
+"tentar novamente não funcionar, verifique o motivo."
 
 msgid "reconnect"
-msgstr ""
+msgstr "reconectar"
 
 msgid "Air Pump"
 msgstr "Bomba de Ar"
@@ -10826,7 +10852,7 @@ msgid "Cutting Module"
 msgstr "Módulo de Corte"
 
 msgid "Auto Fire Extinguishing System"
-msgstr ""
+msgstr "Sistema Automático de Extinção de Incêndio"
 
 msgid "Model:"
 msgstr "Modelo:"
@@ -10988,13 +11014,13 @@ msgid "Generating G-code: layer %1%"
 msgstr "Gerando G-code: camada %1%"
 
 msgid "Flush volumes matrix do not match to the correct size!"
-msgstr ""
+msgstr "A matriz de volumes de descarga não corresponde ao tamanho correto!"
 
 msgid "Grouping error: "
-msgstr ""
+msgstr "Erro de agrupamento: "
 
 msgid " can not be placed in the "
-msgstr ""
+msgstr " não pode ser colocado na "
 
 msgid "Inner wall"
 msgstr "Parede interna"
@@ -11162,6 +11188,8 @@ msgid ""
 " is too close to clumping detection area, there may be collisions when "
 "printing."
 msgstr ""
+" está muito perto da área de detecção de aglomeração, podendo haver colisões "
+"durante a impressão."
 
 msgid "Prime Tower"
 msgstr "Torre de Preparo"
@@ -11175,32 +11203,44 @@ msgstr " está muito perto da área de exclusão, e ocorrerão colisões.\n"
 msgid ""
 " is too close to clumping detection area, and collisions will be caused.\n"
 msgstr ""
+" está muito perto da área de detecção de aglomeração, e ocorrerão colisões.\n"
 
 msgid ""
 "Printing high-temp and low-temp filaments together may cause nozzle clogging "
 "or printer damage."
 msgstr ""
+"A impressão simultânea de filamentos de alta e baixa temperatura pode causar "
+"entupimento do bico ou danos à impressora."
 
 msgid ""
 "Printing high-temp and low-temp filaments together may cause nozzle clogging "
 "or printer damage. If you still want to print, you can enable the option in "
 "Preferences."
 msgstr ""
+"A impressão simultânea de filamentos de alta e baixa temperatura pode causar "
+"entupimento do bico ou danos à impressora. Se ainda assim desejar imprimir, "
+"você pode ativar a opção em Preferências."
 
 msgid ""
 "Printing different-temp filaments together may cause nozzle clogging or "
 "printer damage."
 msgstr ""
+"Imprimir filamentos com temperaturas diferentes simultaneamente pode causar "
+"entupimento dos bicos ou danos à impressora."
 
 msgid ""
 "Printing high-temp and mid-temp filaments together may cause nozzle clogging "
 "or printer damage."
 msgstr ""
+"A impressão simultânea de filamentos de alta e média temperatura pode causar "
+"entupimento do bico ou danos à impressora."
 
 msgid ""
 "Printing mid-temp and low-temp filaments together may cause nozzle clogging "
 "or printer damage."
 msgstr ""
+"A impressão simultânea de filamentos de temperatura média e baixa pode causar "
+"entupimento do bico ou danos à impressora."
 
 msgid "No extrusions under current settings."
 msgstr "Nenhuma extrusão com as configurações atuais."
@@ -11215,6 +11255,8 @@ msgstr ""
 msgid ""
 "Clumping detection is not supported when \"by object\" sequence is enabled."
 msgstr ""
+"A detecção de aglomeração não é suportada quando a sequência \"por objeto\" "
+"está ativada."
 
 msgid ""
 "Prime tower is required for clumping detection; otherwise, there may be "
@@ -11528,7 +11570,7 @@ msgid "Printable area"
 msgstr "Área de impressão"
 
 msgid "Extruder printable area"
-msgstr ""
+msgstr "Área de impressão da extrusora"
 
 msgid "Bed exclude area"
 msgstr "Área de exclusão da mesa"
@@ -11590,12 +11632,14 @@ msgid "Maximum printable height which is limited by mechanism of printer."
 msgstr "Altura máxima de impressão limitada pelo mecanismo da impressora."
 
 msgid "Extruder printable height"
-msgstr ""
+msgstr "Altura de impressão da extrusora"
 
 msgid ""
 "Maximum printable height of this extruder which is limited by mechanism of "
 "printer."
 msgstr ""
+"Altura máxima de impressão desta extrusora, limitada pelo mecanismo da "
+"impressora."
 
 msgid "Preferred orientation"
 msgstr "Orientação preferida"
@@ -14908,19 +14952,19 @@ msgstr ""
 "diâmetro do bico."
 
 msgid "Enable clumping detection"
-msgstr ""
+msgstr "Habilitar detecção de aglomeração"
 
 msgid "Clumping detection layers"
-msgstr ""
+msgstr "Camadas de detecção de aglomeração"
 
 msgid "Clumping detection layers."
-msgstr ""
+msgstr "Camadas de detecção de aglomeração."
 
 msgid "Probing exclude area of clumping"
-msgstr ""
+msgstr "Sondagem exclui área de aglomeração"
 
 msgid "Probing exclude area of clumping."
-msgstr ""
+msgstr "Sondagem exclui área de aglomeração."
 
 msgid "Filament to print internal sparse infill."
 msgstr "Filamento para imprimir preenchimento esparso interno."
diff --git a/resources/profiles/BBL.json b/resources/profiles/BBL.json
index 28ce9d1e90..9425300cb4 100644
--- a/resources/profiles/BBL.json
+++ b/resources/profiles/BBL.json
@@ -1,7 +1,7 @@
 {
     "name": "Bambulab",
     "url": "http://www.bambulab.com/Parameters/vendor/BBL.json",
-    "version": "02.00.00.55",
+    "version": "02.00.00.56",
     "force_update": "0",
     "description": "the initial version of BBL configurations",
     "machine_model_list": [
diff --git a/resources/profiles/BBL/machine/fdm_machine_common.json b/resources/profiles/BBL/machine/fdm_machine_common.json
index e33d6b9f9b..0073ac6a8a 100644
--- a/resources/profiles/BBL/machine/fdm_machine_common.json
+++ b/resources/profiles/BBL/machine/fdm_machine_common.json
@@ -136,6 +136,7 @@
         "60"
     ],
     "scan_first_layer": "0",
+    "enable_power_loss_recovery": "1",
     "silent_mode": "0",
     "single_extruder_multi_material": "1",
     "support_air_filtration": "0",
diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index a5af72f4c9..3e3fd6f9cf 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -3084,11 +3084,10 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
                         m_sorted_layer_filaments.emplace_back(lt.extruders);
                 }
 
-                //BBS: close powerlost recovery
+                // Orca: finish tracking power lost recovery
                 {
-                    if (is_bbl_printers && m_second_layer_things_done) {
-                        file.write("; close powerlost recovery\n");
-                        file.write("M1003 S0\n");
+                    if (m_second_layer_things_done && print.config().enable_power_loss_recovery.value == true) {
+                        file.write(m_writer.enable_power_loss_recovery(false));
                     }
                 }
                 ++ finished_objects;
@@ -3166,12 +3165,9 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
                     m_sorted_layer_filaments.emplace_back(lt.extruders);
             }
 
-            //BBS: close powerlost recovery
-            {
-                if (is_bbl_printers && m_second_layer_things_done) {
-                    file.write("; close powerlost recovery\n");
-                    file.write("M1003 S0\n");
-                }
+            // Orca: finish tracking power lost recovery
+            if (m_second_layer_things_done && print.config().enable_power_loss_recovery.value == true) {
+                file.write(m_writer.enable_power_loss_recovery(false));
             }
             if (m_wipe_tower)
                 // Purge the extruder, pull out the active filament.
@@ -4386,21 +4382,21 @@ LayerResult GCode::process_layer(
     }
 
     if (!first_layer && !m_second_layer_things_done) {
-      if (print.is_BBL_printer()) {
-        // BBS: open powerlost recovery
-        {
-          gcode += "; open powerlost recovery\n";
-          gcode += "M1003 S1\n";
+        // Orca: start tracking power lost recovery
+        if (print.config().enable_power_loss_recovery.value == true) {
+            gcode += m_writer.enable_power_loss_recovery(true);
         }
-        // BBS: open first layer inspection at second layer
-        if (print.config().scan_first_layer.value) {
-          // BBS: retract first to avoid droping when scan model
-          gcode += this->retract();
-          gcode += "M976 S1 P1 ; scan model before printing 2nd layer\n";
-          gcode += "M400 P100\n";
-          gcode += this->unretract();
+
+        if (print.is_BBL_printer()) {
+            // BBS: open first layer inspection at second layer
+            if (print.config().scan_first_layer.value) {
+                // BBS: retract first to avoid droping when scan model
+                gcode += this->retract();
+                gcode += "M976 S1 P1 ; scan model before printing 2nd layer\n";
+                gcode += "M400 P100\n";
+                gcode += this->unretract();
+            }
         }
-      }
       // Reset acceleration at sencond layer
       // Orca: only set once, don't need to call set_accel_and_jerk
       if (m_config.default_acceleration.value > 0 && m_config.initial_layer_acceleration.value > 0) {
diff --git a/src/libslic3r/GCodeWriter.cpp b/src/libslic3r/GCodeWriter.cpp
index 2e4627590f..6340a7af5c 100644
--- a/src/libslic3r/GCodeWriter.cpp
+++ b/src/libslic3r/GCodeWriter.cpp
@@ -1,5 +1,6 @@
 #include "GCodeWriter.hpp"
 #include "CustomGCode.hpp"
+#include "PrintConfig.hpp"
 #include <algorithm>
 #include <iomanip>
 #include <iostream>
@@ -442,6 +443,23 @@ std::string GCodeWriter::reset_e(bool force)
     }
 }
 
+std::string GCodeWriter::enable_power_loss_recovery(bool enable)
+{
+    std::ostringstream gcode;
+    
+    if (m_is_bbl_printers) {
+        gcode << "; start tracking Power Loss Recovery https://wiki.bambulab.com/en/knowledge-sharing/power-loss-recovery\n";
+        gcode << "M1003 S" << (enable ? "1" : "0") << "\n";
+    }
+    else if (FLAVOR_IS(gcfMarlinFirmware)) {
+        gcode << "; start tracking Power-loss Recovery https://marlinfw.org/docs/gcode/M413.html\n";
+        gcode << "M413 S" << (enable ? "1" : "0") << "\n";
+    }
+    
+    return gcode.str();
+}
+
+
 std::string GCodeWriter::update_progress(unsigned int num, unsigned int tot, bool allow_100) const
 {
     if (FLAVOR_IS_NOT(gcfMakerWare) && FLAVOR_IS_NOT(gcfSailfish))
diff --git a/src/libslic3r/GCodeWriter.hpp b/src/libslic3r/GCodeWriter.hpp
index 2c68c921d8..729c89263e 100644
--- a/src/libslic3r/GCodeWriter.hpp
+++ b/src/libslic3r/GCodeWriter.hpp
@@ -61,6 +61,7 @@ public:
     std::string set_input_shaping(char axis, float damp, float freq, std::string type) const;
     std::string reset_e(bool force = false);
     std::string update_progress(unsigned int num, unsigned int tot, bool allow_100 = false) const;
+    std::string enable_power_loss_recovery(bool enable);
     // return false if this extruder was already selected
     bool        need_toolchange(unsigned int filament_id) const;
     std::string set_extruder(unsigned int filament_id);
diff --git a/src/libslic3r/Preset.cpp b/src/libslic3r/Preset.cpp
index 1dcdd83000..f5b0d1c713 100644
--- a/src/libslic3r/Preset.cpp
+++ b/src/libslic3r/Preset.cpp
@@ -1007,7 +1007,7 @@ static std::vector<std::string> s_Preset_printer_options {
     "nozzle_height", "master_extruder_id",
     "default_print_profile", "inherits",
     "silent_mode",
-    "scan_first_layer", "wrapping_detection_layers", "wrapping_exclude_area", "machine_load_filament_time", "machine_unload_filament_time", "machine_tool_change_time", "time_cost", "machine_pause_gcode", "template_custom_gcode",
+    "scan_first_layer", "enable_power_loss_recovery", "wrapping_detection_layers", "wrapping_exclude_area", "machine_load_filament_time", "machine_unload_filament_time", "machine_tool_change_time", "time_cost", "machine_pause_gcode", "template_custom_gcode",
     "nozzle_type", "nozzle_hrc","auxiliary_fan", "nozzle_volume","upward_compatible_machine", "z_hop_types", "travel_slope", "retract_lift_enforce","support_chamber_temp_control","support_air_filtration","printer_structure",
     "best_object_pos", "head_wrap_detect_zone",
     "host_type", "print_host", "printhost_apikey", "bbl_use_printhost",
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index bcb2f833c7..3e48103915 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -3365,6 +3365,12 @@ void PrintConfigDef::init_fff_params()
     def->mode = comAdvanced;
     def->set_default_value(new ConfigOptionBool(false));
 
+    // Orca
+    def = this->add("enable_power_loss_recovery", coBool);
+    def->label = L("Turn on Power Loss Recovery");
+    def->tooltip = L("Enable this to insert power loss recovery commands in generated G-code.(Only for Bambu Lab printers and Marlin firmware based printers)");
+    def->mode = comAdvanced;
+    def->set_default_value(new ConfigOptionBool(false));
 
     //BBS
     // def = this->add("spaghetti_detector", coBool);
diff --git a/src/libslic3r/PrintConfig.hpp b/src/libslic3r/PrintConfig.hpp
index 338fd5c1a7..3e34a8362b 100644
--- a/src/libslic3r/PrintConfig.hpp
+++ b/src/libslic3r/PrintConfig.hpp
@@ -1271,6 +1271,7 @@ PRINT_CONFIG_CLASS_DEFINE(
     ((ConfigOptionIntsNullable,        filament_flush_temp))
     // BBS
     ((ConfigOptionBool,                scan_first_layer))
+    ((ConfigOptionBool,                enable_power_loss_recovery))
     ((ConfigOptionBool,                enable_wrapping_detection))
     ((ConfigOptionInt,                 wrapping_detection_layers))
     ((ConfigOptionPoints,              wrapping_exclude_area))
diff --git a/src/slic3r/GUI/GUI_Factories.cpp b/src/slic3r/GUI/GUI_Factories.cpp
index 7686356bfb..0148f695aa 100644
--- a/src/slic3r/GUI/GUI_Factories.cpp
+++ b/src/slic3r/GUI/GUI_Factories.cpp
@@ -751,8 +751,14 @@ wxMenuItem* MenuFactory::append_menu_item_change_type(wxMenu* menu)
     return append_menu_item(menu, wxID_ANY, _L("Change type"), "",
         [](wxCommandEvent&) { obj_list()->change_part_type(); }, "", menu,
         []() {
-            wxDataViewItem item = obj_list()->GetSelection();
-            return item.IsOk() || obj_list()->GetModel()->GetItemType(item) == itVolume;
+          wxDataViewItemArray selections;
+          obj_list()->GetSelections(selections);
+          if (selections.empty()) return false;
+          for (const auto& it : selections) {
+            if (!(obj_list()->GetModel()->GetItemType(it) & itVolume))
+              return false; // non-volume present -> disable
+          }
+          return true;
         }, m_parent);
 }
 
@@ -864,14 +870,14 @@ void MenuFactory::append_menu_item_reload_from_disk(wxMenu* menu)
 
 void MenuFactory::append_menu_item_replace_with_stl(wxMenu *menu)
 {
-    append_menu_item(menu, wxID_ANY, _L("Replace with STL") + dots, _L("Replace the selected part with new STL"),
+    append_menu_item(menu, wxID_ANY, _L("Replace 3D file") + dots, _L("Replace the selected part with a new 3D file"),
         [](wxCommandEvent &) { plater()->replace_with_stl(); }, "", menu,
         []() { return plater()->can_replace_with_stl(); }, m_parent);
 }
 
 void MenuFactory::append_menu_item_replace_all_with_stl(wxMenu *menu)
 {
-    append_menu_item(menu, wxID_ANY, _L("Replace all with STL") + dots, _L("Replace all selected parts with STL from folder"),
+    append_menu_item(menu, wxID_ANY, _L("Replace all with 3D files") + dots, _L("Replace all selected parts with 3D files from folder"),
         [](wxCommandEvent &) { plater()->replace_all_with_stl(); }, "", menu,
         []() { return plater()->can_replace_all_with_stl(); }, m_parent);
 }
@@ -1798,6 +1804,7 @@ wxMenu* MenuFactory::multi_selection_menu()
         }
         append_menu_item_per_object_process(menu);
         menu->AppendSeparator();
+        append_menu_item_change_type(menu);
         append_menu_item_change_filament(menu);
     }
     return menu;
diff --git a/src/slic3r/GUI/GUI_ObjectList.cpp b/src/slic3r/GUI/GUI_ObjectList.cpp
index 5b5e0bd77a..1cea62ece8 100644
--- a/src/slic3r/GUI/GUI_ObjectList.cpp
+++ b/src/slic3r/GUI/GUI_ObjectList.cpp
@@ -24,6 +24,10 @@
 #include "SingleChoiceDialog.hpp"
 #include "StepMeshDialog.hpp"
 
+
+#include <vector>
+#include <unordered_map>
+#include <functional>
 #include <boost/algorithm/string.hpp>
 #include <wx/progdlg.h>
 #include <wx/listbook.h>
@@ -5337,26 +5341,32 @@ ModelVolume* ObjectList::get_selected_model_volume()
 
 void ObjectList::change_part_type()
 {
-    ModelVolume* volume = get_selected_model_volume();
-    if (!volume)
-        return;
+  wxDataViewItemArray selections;
+  GetSelections(selections);
 
-    const int obj_idx = get_selected_obj_idx();
-    if (obj_idx < 0) return;
+  if (selections.size() <= 1) {
+    int obj_idx = get_selected_obj_idx();
+    if (obj_idx < 0) {
+      return;
+    }
+
+    ModelVolume* volume = get_selected_model_volume();
+    if (!volume) {
+      return;
+    }
 
     const ModelVolumeType type = volume->type();
-    if (type == ModelVolumeType::MODEL_PART)
-    {
-        int model_part_cnt = 0;
-        for (auto vol : (*m_objects)[obj_idx]->volumes) {
-            if (vol->type() == ModelVolumeType::MODEL_PART)
-                ++model_part_cnt;
-        }
+    if (type == ModelVolumeType::MODEL_PART) {
+      int model_part_cnt = 0;
+      for (auto vol : (*m_objects)[obj_idx]->volumes) {
+        if (vol->type() == ModelVolumeType::MODEL_PART)
+          ++model_part_cnt;
+      }
 
-        if (model_part_cnt == 1) {
-            Slic3r::GUI::show_error(nullptr, _(L("The type of the last solid object part is not to be changed.")));
-            return;
-        }
+      if (model_part_cnt == 1) {
+        Slic3r::GUI::show_error(nullptr, _(L("The type of the last solid object part is not to be changed.")));
+        return;
+      }
     }
 
     // ORCA: Fix crash when changing type of svg / text modifier
@@ -5365,22 +5375,165 @@ void ObjectList::change_part_type()
     names.Add(_L("Negative Part"));
     names.Add(_L("Modifier"));
     if (!volume->is_svg() && !volume->is_text()) {
-        names.Add(_L("Support Blocker"));
-        names.Add(_L("Support Enforcer"));
+      names.Add(_L("Support Blocker"));
+      names.Add(_L("Support Enforcer"));
     }
 
     SingleChoiceDialog dlg(_L("Type:"), _L("Choose part type"), names, int(type));
     auto new_type = ModelVolumeType(dlg.GetSingleChoiceIndex());
 
-	if (new_type == type || new_type == ModelVolumeType::INVALID)
-        return;
+    if (new_type == type || new_type == ModelVolumeType::INVALID) {
+      return;
+    }
 
     take_snapshot("Change part type");
 
     volume->set_type(new_type);
     wxDataViewItemArray sel = reorder_volumes_and_get_selection(obj_idx, [volume](const ModelVolume* vol) { return vol == volume; });
-    if (!sel.IsEmpty())
-        select_item(sel.front());
+    if (!sel.IsEmpty()) {
+      select_item(sel.front());
+    }
+    
+  return;
+  }
+
+  // --- Multi Selection ---
+  struct Target { int obj_idx; Slic3r::ModelVolume* vol; };
+  std::vector<Target> targets;
+  targets.reserve(selections.size());
+  bool any_text_or_svg = false;
+
+  for (const auto& item : selections) {
+    auto typeMask = m_objects_model->GetItemType(item);
+    if (!(typeMask & itVolume)) {
+      continue;
+    }
+
+    int obj_idx = -1, vol_idx = -1;
+    get_selected_item_indexes(obj_idx, vol_idx, item);
+    if (obj_idx < 0 || vol_idx < 0) {
+      continue;
+    }
+
+    ModelVolume* vol = (*m_objects)[obj_idx]->volumes[vol_idx];
+    if (!vol) {
+      continue;
+    }
+
+    targets.push_back({ obj_idx, vol });
+    if (vol->is_svg() || vol->is_text())
+      any_text_or_svg = true;
+  }
+  
+  if (targets.empty()) {
+    return;
+  }
+
+  wxArrayString names;
+  names.Add(_L("Part"));
+  names.Add(_L("Negative Part"));
+  names.Add(_L("Modifier"));
+  if (!any_text_or_svg) {
+    names.Add(_L("Support Blocker"));
+    names.Add(_L("Support Enforcer"));
+  }
+
+  // Preselect current type of the first selected volume
+  ModelVolumeType initial_type = targets.front().vol->type();
+  SingleChoiceDialog dlg(_L("Type:"), _L("Choose part type"), names, int(initial_type));
+  auto new_type = ModelVolumeType(dlg.GetSingleChoiceIndex());
+  if (new_type == ModelVolumeType::INVALID) {
+    return;
+  }
+
+  if (new_type != ModelVolumeType::MODEL_PART) {
+    // Count initial MODEL_PARTs per object
+    std::unordered_map<int, int> parts_initial;
+    for (const auto& t : targets) {
+      int cnt = 0;
+      for (auto v : (*m_objects)[t.obj_idx]->volumes)
+          if (v->type() == ModelVolumeType::MODEL_PART) ++cnt;
+      parts_initial[t.obj_idx] = cnt;
+    }
+
+    // Count how many selected MODEL_PARTs would be converted away, per object
+    std::unordered_map<int, int> parts_to_remove;
+    for (const auto& t : targets) {
+      if (t.vol->type() == ModelVolumeType::MODEL_PART) {
+        ++parts_to_remove[t.obj_idx];
+      }
+    }
+
+    // If for any object: initial_parts > 0 and removals == initial_parts => would remove all
+    bool would_remove_all_for_any = false;
+    for (const auto& kv : parts_to_remove) {
+      const int obj_idx   = kv.first;
+      const int removing  = kv.second;
+      const int initial   = parts_initial[obj_idx];
+      if (initial > 0 && removing == initial) {
+        would_remove_all_for_any = true;
+        break;
+      }
+    }
+
+    if (would_remove_all_for_any) {
+      Slic3r::GUI::show_error(nullptr, _(L("The type of the last solid object part is not to be changed.")));
+      return;
+    }
+  }
+
+  take_snapshot("Change part type (multi)");
+
+  // Apply changes
+  size_t applied = 0, skipped_same = 0;
+  std::unordered_map<int, std::vector<ModelVolume*>> changed_per_object;
+  for (const auto& t : targets) {
+    const auto current = t.vol->type();
+    if (current == new_type) {
+        ++skipped_same;
+        continue;
+    }
+    t.vol->set_type(new_type);
+    changed_per_object[t.obj_idx].push_back(t.vol);
+    ++applied;
+  }
+
+  if (applied == 0) {
+    // Nothing changed; keep the original selection as-is
+    select_items(selections);
+    return;
+  }
+
+ // Reorder per object and rebuild selection to follow changed volumes 
+  wxDataViewItemArray new_selection;
+  for (const auto& kv : changed_per_object) {
+    const int obj_idx = kv.first;
+    const auto& changed_vols = kv.second;
+    
+    std::unordered_set<const ModelVolume*> changed_set;
+    changed_set.reserve(changed_vols.size());
+    for (const auto* v : changed_vols) {
+      changed_set.insert(v);
+    }
+
+    wxDataViewItemArray sel = reorder_volumes_and_get_selection(
+      obj_idx,
+      [&changed_set](const ModelVolume* v) -> bool {
+        return changed_set.find(v) != changed_set.end();
+      }
+    );
+
+    // Append to new_selection
+    for (const auto& it : sel) new_selection.Add(it);
+  }
+
+  if (!new_selection.IsEmpty()) {
+    select_items(new_selection);
+  } else {
+    select_items(selections);
+  }
+
+  return;
 }
 
 void ObjectList::last_volume_is_deleted(const int obj_idx)
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index d489beecbd..25c7129783 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -7766,7 +7766,38 @@ bool Plater::priv::replace_volume_with_stl(int object_idx, int volume_idx, const
 
     Model new_model;
     try {
-        new_model = Model::read_from_file(path, nullptr, nullptr, LoadStrategy::AddDefaultInstances | LoadStrategy::LoadModel);
+        const bool is_step = boost::algorithm::iends_with(path, ".stp") || boost::algorithm::iends_with(path, ".step");
+        if (is_step) {
+            auto config = wxGetApp().app_config;
+            double linear = std::max(0.003, string_to_double_decimal_point(config->get("linear_defletion")));
+            double angle = std::max(0.5, string_to_double_decimal_point(config->get("angle_defletion")));
+            bool split_compound = config->get_bool("is_split_compound");
+            bool is_user_cancel = false;
+
+            auto callback = [&is_user_cancel, linear, angle, split_compound](Slic3r::Step &file, double &linear_value, double &angle_value, bool &is_split) -> int {
+                if (wxGetApp().app_config->get_bool("enable_step_mesh_setting")) {
+                    StepMeshDialog mesh_dlg(nullptr, file, linear, angle);
+                    if (mesh_dlg.ShowModal() == wxID_OK) {
+                        linear_value = mesh_dlg.get_linear_defletion();
+                        angle_value  = mesh_dlg.get_angle_defletion();
+                        is_split     = mesh_dlg.get_split_compound_value();
+                        return 1;
+                    }
+                } else {
+                    linear_value = linear;
+                    angle_value  = angle;
+                    is_split     = split_compound;
+                    return 1;
+                }
+                is_user_cancel = true;
+                return -1;
+            };
+
+            new_model = Model::read_from_step(path, LoadStrategy::AddDefaultInstances | LoadStrategy::LoadModel, nullptr, nullptr, callback, linear, angle, split_compound);
+            if (is_user_cancel) return false;
+        } else {
+            new_model = Model::read_from_file(path, nullptr, nullptr, LoadStrategy::AddDefaultInstances | LoadStrategy::LoadModel);
+        }
         for (ModelObject* model_object : new_model.objects) {
             model_object->center_around_origin();
             model_object->ensure_on_bed();
@@ -7865,7 +7896,7 @@ void Plater::priv::replace_with_stl()
         return;
     }
 
-    if (!replace_volume_with_stl(object_idx, volume_idx, out_path, "Replace with STL"))
+    if (!replace_volume_with_stl(object_idx, volume_idx, out_path, "Replace with 3D file"))
         return;
 
     // update 3D scene
@@ -7949,7 +7980,7 @@ void Plater::priv::replace_all_with_stl()
         return;
     }
 
-    std::string status = _L("Replaced with STLs from directory:\n").ToStdString() + out_path.string() + "\n\n";
+    std::string status = _L("Replaced with 3D files from directory:\n").ToStdString() + out_path.string() + "\n\n";
 
     for (unsigned int idx : volume_idxs) {
         const GLVolume* v = selection.get_volume(idx);
@@ -7982,7 +8013,7 @@ void Plater::priv::replace_all_with_stl()
 
         BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " replacing volume : " << input_path << " with " << new_path;
 
-        if (!replace_volume_with_stl(object_idx, volume_idx, new_path, "Replace with STL")) {
+        if (!replace_volume_with_stl(object_idx, volume_idx, new_path, "Replace with 3D file")) {
             status += boost::str(boost::format(_L("✖ Skipped %1%: failed to replace.\n").ToStdString()) % volume_name);
             BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " cannot replace volume : failed to replace with " << new_path;
             continue;
diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index 253a76a286..b98bb91ec3 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -2482,7 +2482,7 @@ void TabPrint::build()
 
         optgroup->append_single_option_line("slowdown_for_curled_perimeters", "speed_settings_overhang_speed#slow-down-for-curled-perimeters");
         Line line = { L("Overhang speed"), L("This is the speed for various overhang degrees. Overhang degrees are expressed as a percentage of line width. 0 speed means no slowing down for the overhang degree range and wall speed is used") };
-        line.label_path = "slow-down-for-overhang";
+        line.label_path = "speed_settings_overhang_speed#speed";
         line.append_option(optgroup->get_option("overhang_1_4_speed"));
         line.append_option(optgroup->get_option("overhang_2_4_speed"));
         line.append_option(optgroup->get_option("overhang_3_4_speed"));
@@ -3866,7 +3866,7 @@ void TabFilament::build()
 
         // Orca: adaptive pressure advance and calibration model
         optgroup->append_single_option_line("adaptive_pressure_advance", "material_flow_ratio_and_pressure_advance#enable-adaptive-pressure-advance-beta");
-        optgroup->append_single_option_line("adaptive_pressure_advance_overhangs", "material_flow_ratio_and_pressure_advance##enable-adaptive-pressure-advance-for-overhangs-beta");
+        optgroup->append_single_option_line("adaptive_pressure_advance_overhangs", "material_flow_ratio_and_pressure_advance#enable-adaptive-pressure-advance-for-overhangs-beta");
         optgroup->append_single_option_line("adaptive_pressure_advance_bridges", "material_flow_ratio_and_pressure_advance#pressure-advance-for-bridges");
 
         Option option = optgroup->get_option("adaptive_pressure_advance_model");
@@ -4360,11 +4360,13 @@ void TabPrinter::build_fff()
         optgroup->append_single_option_line("preferred_orientation", "printer_basic_information_printable_space#preferred-orientation");
 
         optgroup = page->new_optgroup(L("Advanced"), L"param_advanced");
+
         optgroup->append_single_option_line("printer_structure", "printer_basic_information_advanced#printer-structure");
         optgroup->append_single_option_line("gcode_flavor", "printer_basic_information_advanced#g-code-flavor");
         optgroup->append_single_option_line("pellet_modded_printer", "printer_basic_information_advanced#pellet-modded-printer");
         optgroup->append_single_option_line("bbl_use_printhost", "printer_basic_information_advanced#use-3rd-party-print-host");
         optgroup->append_single_option_line("scan_first_layer" , "printer_basic_information_advanced#scan-first-layer");
+        optgroup->append_single_option_line("enable_power_loss_recovery", "printer_basic_information_advanced#power-loss-recovery");
         //option  = optgroup->get_option("wrapping_exclude_area");
         //option.opt.full_width = true;
         //optgroup->append_single_option_line(option);
@@ -4712,11 +4714,11 @@ PageShp TabPrinter::build_kinematics_page()
 
     // resonance avoidance ported over from qidi slicer
     optgroup = page->new_optgroup(L("Resonance Avoidance"), "param_resonance_avoidance");
-    optgroup->append_single_option_line("resonance_avoidance", "printer_motion_ability_resonance_avoidance#resonance-avoidance");
+    optgroup->append_single_option_line("resonance_avoidance", "printer_motion_ability#resonance-avoidance");
     // Resonance‑avoidance speed inputs
     {
         Line resonance_line = {L("Resonance Avoidance Speed"), L""};
-        resonance_line.label_path = "printer_motion_ability_resonance_avoidance#resonance-avoidance-speed";
+        resonance_line.label_path = "printer_motion_ability#resonance-avoidance-speed";
         resonance_line.append_option(optgroup->get_option("min_resonance_avoidance_speed"));
         resonance_line.append_option(optgroup->get_option("max_resonance_avoidance_speed"));
         optgroup->append_line(resonance_line);
@@ -4894,7 +4896,7 @@ if (is_marlin_flavor)
         optgroup = page->new_optgroup(L("Single extruder multi-material parameters"), "param_settings");
         optgroup->append_single_option_line("cooling_tube_retraction", "printer_multimaterial_semm_parameters#cooling-tube-position");
         optgroup->append_single_option_line("cooling_tube_length", "printer_multimaterial_semm_parameters#cooling-tube-length");
-        optgroup->append_single_option_line("parking_pos_retraction", "printer_multimaterial_semm_parameters#filament-parking-positions");
+        optgroup->append_single_option_line("parking_pos_retraction", "printer_multimaterial_semm_parameters#filament-parking-position");
         optgroup->append_single_option_line("extra_loading_move", "printer_multimaterial_semm_parameters#extra-loading-distance");
         optgroup->append_single_option_line("high_current_on_filament_swap", "printer_multimaterial_semm_parameters#high-extruder-current-on-filament-swap");
 
@@ -5199,7 +5201,11 @@ void TabPrinter::toggle_options()
         // SoftFever: hide non-BBL settings
         for (auto el : {"use_firmware_retraction", "use_relative_e_distances", "support_multi_bed_types", "pellet_modded_printer", "bed_mesh_max", "bed_mesh_min", "bed_mesh_probe_distance", "adaptive_bed_mesh_margin", "thumbnails"})
           toggle_line(el, !is_BBL_printer);
+
+        auto gcf = m_config->option<ConfigOptionEnum<GCodeFlavor>>("gcode_flavor")->value;
+        toggle_line("enable_power_loss_recovery", is_BBL_printer || gcf == gcfMarlinFirmware);
     }
+    
 
     if (m_active_page->title() == L("Machine G-code")) {
         PresetBundle *preset_bundle = wxGetApp().preset_bundle;
diff --git a/src/slic3r/Utils/Http.cpp b/src/slic3r/Utils/Http.cpp
index bcb9dda915..e10115b1f7 100644
--- a/src/slic3r/Utils/Http.cpp
+++ b/src/slic3r/Utils/Http.cpp
@@ -189,7 +189,6 @@ Http::priv::priv(const std::string &url)
 #ifdef __WINDOWS__
 	::curl_easy_setopt(curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_MAX_TLSv1_2);
 #endif
-	::curl_easy_setopt(curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
 	::curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
 	::curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);