diff --git a/src/libslic3r/Format/3mf.cpp b/src/libslic3r/Format/3mf.cpp
index db5c064686..47b31ec474 100644
--- a/src/libslic3r/Format/3mf.cpp
+++ b/src/libslic3r/Format/3mf.cpp
@@ -1971,7 +1971,15 @@ namespace Slic3r {
 
         m_curr_object.geometry.custom_supports.push_back(get_attribute_value_string(attributes, num_attributes, CUSTOM_SUPPORTS_ATTR));
         m_curr_object.geometry.custom_seam.push_back(get_attribute_value_string(attributes, num_attributes, CUSTOM_SEAM_ATTR));
-        m_curr_object.geometry.mm_segmentation.push_back(get_attribute_value_string(attributes, num_attributes, MM_SEGMENTATION_ATTR));
+
+        // Now load MM segmentation data. Unfortunately, BambuStudio has changed the attribute name after they forked us,
+        // leading to https://github.com/prusa3d/PrusaSlicer/issues/12502. Let's try to load both keys if the usual
+        // one that PrusaSlicer uses is not present.
+        std::string mm_segmentation_serialized = get_attribute_value_string(attributes, num_attributes, MM_SEGMENTATION_ATTR);
+        if (mm_segmentation_serialized.empty())
+            mm_segmentation_serialized = get_attribute_value_string(attributes, num_attributes, "paint_color");
+        m_curr_object.geometry.mm_segmentation.push_back(mm_segmentation_serialized);
+
         return true;
     }
 
diff --git a/src/slic3r/GUI/ConfigWizard.cpp b/src/slic3r/GUI/ConfigWizard.cpp
index 24234da141..dd300f985e 100644
--- a/src/slic3r/GUI/ConfigWizard.cpp
+++ b/src/slic3r/GUI/ConfigWizard.cpp
@@ -1473,11 +1473,12 @@ PageDownloader::PageDownloader(ConfigWizard* parent)
     boldfont.SetWeight(wxFONTWEIGHT_BOLD);
 
     append_spacer(VERTICAL_SPACING);
+
     auto* box_allow_downloads = new wxCheckBox(this, wxID_ANY, _L("Allow built-in downloader"));
     // TODO: Do we want it like this? The downloader is allowed for very first time the wizard is run. 
     bool box_allow_value = (app_config->has("downloader_url_registered") ? app_config->get_bool("downloader_url_registered") : true);
     box_allow_downloads->SetValue(box_allow_value);
-    append(box_allow_downloads); 
+    append(box_allow_downloads);
 
     // append info line with link on printables.com
     {
@@ -1523,7 +1524,7 @@ PageDownloader::PageDownloader(ConfigWizard* parent)
     )));
 #endif //(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION)
 
-    box_allow_downloads->Bind(wxEVT_CHECKBOX, [this](wxCommandEvent& event) {  this->m_downloader->allow(event.IsChecked()); });
+    box_allow_downloads->Bind(wxEVT_CHECKBOX, [this](wxCommandEvent& event) { this->m_downloader->allow(event.IsChecked()); });
 
     m_downloader = new DownloaderUtils::Worker(this);
     append(m_downloader);
@@ -2409,9 +2410,7 @@ void ConfigWizard::priv::load_pages()
     btn_finish->Enable(any_fff_selected || any_sla_selected || custom_printer_selected || custom_printer_in_bundle);
 
     index->add_page(page_update);
-#if !defined(__linux__) || (defined(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION))
     index->add_page(page_downloader);
-#endif
     index->add_page(page_reload_from_disk);
 #ifdef _WIN32
     index->add_page(page_files_association);
@@ -2778,12 +2777,12 @@ void ConfigWizard::priv::on_3rdparty_install(const VendorProfile *vendor, bool i
 bool ConfigWizard::priv::on_bnt_finish()
 {
     wxBusyCursor wait;
-#if !defined(__linux__) || (defined(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION))
+
     if (!page_downloader->on_finish_downloader()) {
         index->go_to(page_downloader);
         return false;
     }
-#endif
+
     /* If some printers were added/deleted, but related MaterialPage wasn't activated,
      * than last changes wouldn't be updated for filaments/materials.
      * SO, do that before check_and_install_missing_materials()
@@ -3406,9 +3405,7 @@ ConfigWizard::ConfigWizard(wxWindow *parent)
 
     
     p->add_page(p->page_update   = new PageUpdate(this));
-#if !defined(__linux__) || (defined(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION))
     p->add_page(p->page_downloader = new PageDownloader(this));
-#endif
     p->add_page(p->page_reload_from_disk = new PageReloadFromDisk(this));
 #ifdef _WIN32
     p->add_page(p->page_files_association = new PageFilesAssociation(this));
diff --git a/src/slic3r/GUI/Downloader.cpp b/src/slic3r/GUI/Downloader.cpp
index 129079d806..c5ee0ff373 100644
--- a/src/slic3r/GUI/Downloader.cpp
+++ b/src/slic3r/GUI/Downloader.cpp
@@ -66,11 +66,11 @@ void open_folder(const std::string& path)
 
 std::string filename_from_url(const std::string& url)
 {
-	// TODO: can it be done with curl?
-	size_t slash = url.find_last_of("/");
-	if (slash == std::string::npos && slash != url.size() - 1)
+	std::string url_plain = std::string(url.begin(), std::find(url.begin(), url.end(), '?'));
+	size_t slash = url_plain.find_last_of("/");
+	if (slash == std::string::npos)
 		return std::string();
-	return url.substr(slash + 1, url.size() - slash + 1);
+	return std::string(url_plain.begin() + slash + 1, url_plain.end());
 }
 }
 
diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index 038fcbc252..96c9c69f18 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -3188,9 +3188,6 @@ void GUI_App::show_desktop_integration_dialog()
 
 void GUI_App::show_downloader_registration_dialog()
 {
-#if defined(__linux__) && !defined(SLIC3R_DESKTOP_INTEGRATION) 
-    return;
-#endif
     InfoDialog msg(nullptr
         , format_wxstr(_L("Welcome to %1% version %2%."), SLIC3R_APP_NAME, SLIC3R_VERSION)
         , format_wxstr(_L(
@@ -3202,10 +3199,10 @@ void GUI_App::show_downloader_registration_dialog()
     if (msg.ShowModal() == wxID_YES) {
         auto downloader_worker = new DownloaderUtils::Worker(nullptr);
         downloader_worker->perform_register(app_config->get("url_downloader_dest"));
-#if defined(__linux__)
+#if defined(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION) 
         if (DownloaderUtils::Worker::perform_registration_linux)
             DesktopIntegrationDialog::perform_downloader_desktop_integration();
-#endif //(__linux__)
+#endif //(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION)
     } else {
         app_config->set("downloader_url_registered", "0");
     }
@@ -3598,26 +3595,23 @@ void GUI_App::start_download(std::string url)
         return; 
     }
 
-    // Windows register and deregister executable path to registry - cant get here when not registered
-    // Apple registers via info.plist attached to exectable - might get here
-    // Linux registers via desktop integration file - might get here only if such file was created outside Slicer.
-    // Desktop integration is limited with SLIC3R_DESKTOP_INTEGRATION (cmake option). 
-#if defined(__APPLE__) || (defined(__linux__) && !defined(SLIC3R_DESKTOP_INTEGRATION))
-    if (app_config && app_config->get_bool("downloader_url_registered")) {
+    #if defined(__APPLE__) || (defined(__linux__) && !defined(SLIC3R_DESKTOP_INTEGRATION))
+    if (app_config && !app_config->get_bool("downloader_url_registered"))
+    {
         notification_manager()->push_notification(NotificationType::URLNotRegistered);
-        BOOST_LOG_TRIVIAL(error) << "Recieved command to open URL, but it is not allowed in app configuration. URL: " << url;
+        BOOST_LOG_TRIVIAL(error) << "Received command to open URL, but it is not allowed in app configuration. URL: " << url;
         return;
     }
-#endif //defined(__APPLE__) || (defined(__linux__) && !defined(SLIC3R_DESKTOP_INTEGRATION))
+    #endif //defined(__APPLE__) || (defined(__linux__) && !defined(SLIC3R_DESKTOP_INTEGRATION))
 
     //lets always init so if the download dest folder was changed, new dest is used 
-    boost::filesystem::path dest_folder(app_config->get("url_downloader_dest"));
-    if (dest_folder.empty() || !boost::filesystem::is_directory(dest_folder)) {
-        std::string msg = _u8L("Could not start URL download. Destination folder is not set. Please choose destination folder in Configuration Wizard.");
-        BOOST_LOG_TRIVIAL(error) << msg;
-        show_error(nullptr, msg);
-        return;
-    }
+        boost::filesystem::path dest_folder(app_config->get("url_downloader_dest"));
+        if (dest_folder.empty() || !boost::filesystem::is_directory(dest_folder)) {
+            std::string msg = _u8L("Could not start URL download. Destination folder is not set. Please choose destination folder in Configuration Wizard.");
+            BOOST_LOG_TRIVIAL(error) << msg;
+            show_error(nullptr, msg);
+            return;
+        }
     m_downloader->init(dest_folder);
     m_downloader->start_download(url);
 }
diff --git a/src/slic3r/GUI/NotificationManager.hpp b/src/slic3r/GUI/NotificationManager.hpp
index ede263bd4c..da0688961a 100644
--- a/src/slic3r/GUI/NotificationManager.hpp
+++ b/src/slic3r/GUI/NotificationManager.hpp
@@ -125,7 +125,7 @@ enum class NotificationType
 	ExportOngoing,
 	// Progressbar of download from prusaslicer:// url
 	URLDownload,
-	// MacOS and Linux flatpack (SLIC3R_DESKTOP_INTEGRATION = 0) specific - PS comes forward even when downloader is not allowed
+	// MacOS specific - PS comes forward even when downloader is not allowed
 	URLNotRegistered,
 	// Config file was detected during startup, open wifi config dialog via hypertext
 	WifiConfigFileDetected,
diff --git a/src/slic3r/GUI/Preferences.cpp b/src/slic3r/GUI/Preferences.cpp
index 9b2bb828a7..8c74c79356 100644
--- a/src/slic3r/GUI/Preferences.cpp
+++ b/src/slic3r/GUI/Preferences.cpp
@@ -33,10 +33,6 @@
 #include "DesktopIntegrationDialog.hpp"
 #endif //(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION)
 
-#if defined(__linux__) && !defined(SLIC3R_DESKTOP_INTEGRATION)
-#include "NotificationManager.hpp"
-#endif //(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION)
-
 namespace Slic3r {
 
 	static t_config_enum_names enum_names_from_keys_map(const t_config_enum_values& enum_keys_map)
@@ -135,10 +131,10 @@ void PreferencesDialog::show(const std::string& highlight_opt_key /*= std::strin
 
 	if (wxGetApp().is_editor()) {
 		auto app_config = get_app_config();
-#if !defined(__linux__) || (defined(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION))
+
 		downloader->set_path_name(app_config->get("url_downloader_dest"));
 		downloader->allow(!app_config->has("downloader_url_registered") || app_config->get_bool("downloader_url_registered"));
-#endif
+
 		for (const std::string& opt_key : {"suppress_hyperlinks", "downloader_url_registered"})
 			m_optgroup_other->set_value(opt_key, app_config->get_bool(opt_key));
 
@@ -646,17 +642,15 @@ void PreferencesDialog::build()
 			//L("If enabled, the descriptions of configuration parameters in settings tabs wouldn't work as hyperlinks. "
 			//  "If disabled, the descriptions of configuration parameters in settings tabs will work as hyperlinks."),
 			app_config->get_bool("suppress_hyperlinks"));
-#if !defined(__linux__) || (defined(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION))
+		
 		append_bool_option(m_optgroup_other, "downloader_url_registered",
 			L("Allow downloads from Printables.com"),
 			L("If enabled, PrusaSlicer will be allowed to download from Printables.com"),
 			app_config->get_bool("downloader_url_registered"));
-#endif
 
 		activate_options_tab(m_optgroup_other);
-#if !defined(__linux__) || (defined(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION))
+
 		create_downloader_path_sizer();
-#endif
 		create_settings_font_widget();
 
 #if ENABLE_ENVIRONMENT_MAP
@@ -761,18 +755,16 @@ void PreferencesDialog::update_ctrls_alignment()
 
 void PreferencesDialog::accept(wxEvent&)
 {
-#if !defined(__linux__) || (defined(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION))
 	if(wxGetApp().is_editor()) {
 		if (const auto it = m_values.find("downloader_url_registered"); it != m_values.end())
 			downloader->allow(it->second == "1");
 		if (!downloader->on_finish())
 			return;
-#if defined(__linux__)
-		if(DownloaderUtils::Worker::perform_registration_linux)
+#if defined(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION) 
+		if(DownloaderUtils::Worker::perform_registration_linux) 
 			DesktopIntegrationDialog::perform_downloader_desktop_integration();
-#endif
+#endif //(__linux__) && defined(SLIC3R_DESKTOP_INTEGRATION)
 	}
-#endif
 
 	std::vector<std::string> options_to_recreate_GUI = { "no_defaults", "tabs_as_menu", "sys_menu_enabled", "font_pt_size", "suppress_round_corners" };