diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index 905478207e..8dc35e2e65 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -3227,7 +3227,7 @@ wxString GUI_App::current_language_code_safe() const
 
 void GUI_App::open_web_page_localized(const std::string &http_address)
 {
-    open_browser_with_warning_dialog(http_address + "&lng=" + this->current_language_code_safe(), nullptr, false);
+    open_browser_with_warning_dialog(from_u8(http_address + "&lng=") + this->current_language_code_safe(), nullptr, false);
 }
 
 // If we are switching from the FFF-preset to the SLA, we should to control the printed objects if they have a part(s).
@@ -3701,7 +3701,7 @@ void GUI_App::app_updater(bool from_user)
     assert(!app_data.target_path.empty());
 
     // dialog with new version info
-    AppUpdateAvailableDialog dialog(*Semver::parse(SLIC3R_VERSION), *app_data.version, from_user);
+    AppUpdateAvailableDialog dialog(*Semver::parse(SLIC3R_VERSION), *app_data.version, from_user, app_data.action == AppUpdaterURLAction::AUUA_OPEN_IN_BROWSER);
     auto dialog_result = dialog.ShowModal();
     // checkbox "do not show again"
     if (dialog.disable_version_check()) {
@@ -3711,6 +3711,10 @@ void GUI_App::app_updater(bool from_user)
     if (dialog_result != wxID_OK) {
         return;
     }
+    if (app_data.action == AppUpdaterURLAction::AUUA_OPEN_IN_BROWSER) {
+        open_browser_with_warning_dialog(from_u8(app_data.url));
+        return;
+    }
     // dialog with new version download (installer or app dependent on system) including path selection
     AppUpdateDownloadDialog dwnld_dlg(*app_data.version, app_data.target_path);
     dialog_result = dwnld_dlg.ShowModal();
diff --git a/src/slic3r/GUI/UpdateDialogs.cpp b/src/slic3r/GUI/UpdateDialogs.cpp
index ac6bf58009..ea948e4e2c 100644
--- a/src/slic3r/GUI/UpdateDialogs.cpp
+++ b/src/slic3r/GUI/UpdateDialogs.cpp
@@ -99,7 +99,7 @@ bool MsgUpdateSlic3r::disable_version_check() const
 
  wxSize AppUpdateAvailableDialog::AUAD_size;
 // AppUpdater
-AppUpdateAvailableDialog::AppUpdateAvailableDialog(const Semver& ver_current, const Semver& ver_online, bool from_user)
+AppUpdateAvailableDialog::AppUpdateAvailableDialog(const Semver& ver_current, const Semver& ver_online, bool from_user, bool browser_on_next)
 	: MsgDialog(nullptr, _(L("App Update available")), wxString::Format(_(L("New version of %s is available.\nDo you wish to download it?")), SLIC3R_APP_NAME))
 {
 	auto* versions = new wxFlexGridSizer(1, 0, VERT_SPACING);
@@ -116,6 +116,12 @@ AppUpdateAvailableDialog::AppUpdateAvailableDialog(const Semver& ver_current, co
 	}
 	content_sizer->AddSpacer(VERT_SPACING);
 	
+    if (browser_on_next)
+    {
+        content_sizer->Add(new wxStaticText(this, wxID_ANY, _(L("Clicking \'Next\' will open a browser window to select your download."))));
+        content_sizer->AddSpacer(VERT_SPACING);
+    }
+
 	AUAD_size = content_sizer->GetSize();
 	
 
diff --git a/src/slic3r/GUI/UpdateDialogs.hpp b/src/slic3r/GUI/UpdateDialogs.hpp
index ef0cac1d7e..432da9812b 100644
--- a/src/slic3r/GUI/UpdateDialogs.hpp
+++ b/src/slic3r/GUI/UpdateDialogs.hpp
@@ -46,7 +46,7 @@ private:
 class AppUpdateAvailableDialog : public MsgDialog
 {
 public:
-	AppUpdateAvailableDialog(const Semver& ver_current, const Semver& ver_online, bool from_user);
+	AppUpdateAvailableDialog(const Semver& ver_current, const Semver& ver_online, bool from_user, bool browser_on_next);
 	AppUpdateAvailableDialog(AppUpdateAvailableDialog&&) = delete;
 	AppUpdateAvailableDialog(const AppUpdateAvailableDialog&) = delete;
 	AppUpdateAvailableDialog& operator=(AppUpdateAvailableDialog&&) = delete;
diff --git a/src/slic3r/Utils/AppUpdater.cpp b/src/slic3r/Utils/AppUpdater.cpp
index f8ad97905f..d3016eace7 100644
--- a/src/slic3r/Utils/AppUpdater.cpp
+++ b/src/slic3r/Utils/AppUpdater.cpp
@@ -45,7 +45,7 @@ namespace {
 		bool res = GUI::create_process(path, std::wstring(), msg);
 		if (!res) {
 			std::string full_message = GUI::format(_u8L("Running downloaded instaler of %1% has failed:\n%2%"), SLIC3R_APP_NAME, msg);
-			BOOST_LOG_TRIVIAL(error) << full_message; // lm: maybe UI error msg?  // dk: bellow. (maybe some general show error evt would be better?)
+			BOOST_LOG_TRIVIAL(error) << full_message;
 			wxCommandEvent* evt = new wxCommandEvent(EVT_SLIC3R_APP_DOWNLOAD_FAILED);
 			evt->SetString(full_message);
 			GUI::wxGetApp().QueueEvent(evt);
@@ -165,7 +165,7 @@ AppUpdater::priv::priv() :
 	if (!downloads_path.empty()) {
 		m_default_dest_folder = std::move(downloads_path);
 	}
-	BOOST_LOG_TRIVIAL(trace) << "App updater default download path: " << m_default_dest_folder; //lm:Is this an error? // dk: changed to trace
+	BOOST_LOG_TRIVIAL(trace) << "App updater default download path: " << m_default_dest_folder;
 	
 }
 
@@ -236,7 +236,7 @@ boost::filesystem::path AppUpdater::priv::download_file(const DownloadAppData& d
 	}
 
 	std::string error_message;
-	bool res = http_get_file(data.url, 130 * 1024 * 1024 //2.4.0 windows installer is 65MB //lm:I don't know, but larger. The binaries will grow. // dk: changed to 130, to have 100% more space. We should put this information into version file. 
+	bool res = http_get_file(data.url, 256 * 1024 * 1024  
 		// on_progress
 		, [&last_gui_progress, expected_size](Http::Progress progress) {
 			// size check
@@ -333,10 +333,6 @@ void AppUpdater::priv::version_check(const std::string& version_check_url)
 		}
 		, error_message
 	);
-	//lm:In case the internet is not available, it will report no updates if run by user.
-	// We might save a flag that we don't know or try to run the version_check again, reporting
-	// the failure.
-	// dk: changed to download version every time. Dialog will show if m_triggered_by_user.
 	if (!res) {
 		std::string message = GUI::format("Downloading %1% version file has failed:\n%2%", SLIC3R_APP_NAME, error_message);
 		BOOST_LOG_TRIVIAL(error) << message;
@@ -390,19 +386,21 @@ void AppUpdater::priv::parse_version_string(const std::string& body)
 #else
 			"release:linux"
 #endif
-//lm:Related to the ifdefs. We should also support BSD, which behaves similar to Linux in most cases.
-// Unless you have a reason not to, I would consider doing _WIN32, elif __APPLE__, else ... Not just here.
-// dk: so its ok now or we need to specify BSD?
 			) {
 			for (const auto& data : section.second) {
 				if (data.first == "url") {
 					new_data.url = data.second.data();
 					new_data.target_path = m_default_dest_folder / AppUpdater::get_filename_from_url(new_data.url);
 					BOOST_LOG_TRIVIAL(info) << format("parsing version string: url: %1%", new_data.url);
-				} else if (data.first == "size"){
+				} else if (data.first == "size") {
 					new_data.size = std::stoi(data.second.data());
 					BOOST_LOG_TRIVIAL(info) << format("parsing version string: expected size: %1%", new_data.size);
-				}
+				} else if (data.first == "action") {
+                    std::string action = data.second.data();
+                    if (action == "browser") {
+                        new_data.action = AppUpdaterURLAction::AUUA_OPEN_IN_BROWSER;
+                    }
+                }
 			}
 		}
 
diff --git a/src/slic3r/Utils/AppUpdater.hpp b/src/slic3r/Utils/AppUpdater.hpp
index 93555f3126..476d48241d 100644
--- a/src/slic3r/Utils/AppUpdater.hpp
+++ b/src/slic3r/Utils/AppUpdater.hpp
@@ -19,6 +19,10 @@ namespace Slic3r {
 std::string get_downloads_path_mac();
 #endif //__APPLE__
 
+enum class AppUpdaterURLAction {
+    AUUA_DOWNLOAD,
+    AUUA_OPEN_IN_BROWSER
+};
 struct DownloadAppData
 {
 	std::string				url;
@@ -26,6 +30,7 @@ struct DownloadAppData
 	boost::optional<Semver> version;
 	size_t				    size;
 	boost::filesystem::path target_path;
+    AppUpdaterURLAction     action { AppUpdaterURLAction::AUUA_DOWNLOAD };
 };
 
 class AppUpdater