diff --git a/airdcpp-core/airdcpp/HttpConnection.cpp b/airdcpp-core/airdcpp/HttpConnection.cpp
index 11c44cff..cbc69f92 100644
--- a/airdcpp-core/airdcpp/HttpConnection.cpp
+++ b/airdcpp-core/airdcpp/HttpConnection.cpp
@@ -29,6 +29,8 @@
 #include <airdcpp/ResourceManager.h>
 #include <airdcpp/format.h>
 
+#include <boost/algorithm/string/trim.hpp>
+
 namespace dcpp {
 
 HttpConnection::HttpConnection(bool aIsUnique, const HttpOptions& aOptions) :
@@ -246,15 +248,28 @@ void HttpConnection::on(BufferedSocketListener::Line, const string& aLine) noexc
 		if(size != -1) {
 			socket->setDataMode(size);
 		} else connState = CONN_CHUNKED;
-	} else if(Util::findSubString(aLine, "Content-Length") != string::npos) {
-		size = Util::toInt(aLine.substr(16, aLine.length() - 17));
-	} else if(mimeType.empty()) {
-		if(Util::findSubString(aLine, "Content-Encoding") != string::npos) {
-			if(aLine.substr(18, aLine.length() - 19) == "x-bzip2")
-				mimeType = "application/x-bzip2";
-		} else if(Util::findSubString(aLine, "Content-Type") != string::npos) {
-			mimeType = aLine.substr(14, aLine.length() - 15);
+	} else if (aLine.length() > 2) {
+		// Header
+		auto separator = aLine.find_first_of(':');
+		if (separator <= 1) {
+			return;
+		}
+
+		auto name = boost::algorithm::trim_copy(aLine.substr(0, separator));
+		auto value = boost::algorithm::trim_copy(aLine.substr(separator + 1));
+
+		if (name == "Content-Length") {
+			size = Util::toInt(value);
+		} else if (mimeType.empty()) {
+			if (name == "Content-Encoding") {
+				if (value == "x-bzip2")
+					mimeType = "application/x-bzip2";
+			} else if (name == "Content-Type") {
+				mimeType = value;
+			}
 		}
+
+		headers.try_emplace(name, value);
 	}
 }
 
diff --git a/airdcpp-core/airdcpp/HttpConnection.h b/airdcpp-core/airdcpp/HttpConnection.h
index ee33b931..ac364d35 100644
--- a/airdcpp-core/airdcpp/HttpConnection.h
+++ b/airdcpp-core/airdcpp/HttpConnection.h
@@ -53,6 +53,7 @@ class HttpConnection : private BufferedSocketListener, public Speaker<HttpConnec
 	int64_t getSize() const { return size; }
 	int64_t getDone() const { return done; }
 
+	const StringMap getHeaders() const noexcept { return headers; }
 private:
 	enum RequestType { TYPE_GET, TYPE_POST, TYPE_UNKNOWN };
 	enum ConnectionStates { CONN_UNKNOWN, CONN_OK, CONN_FAILED, CONN_MOVED, CONN_CHUNKED };
@@ -87,6 +88,8 @@ class HttpConnection : private BufferedSocketListener, public Speaker<HttpConnec
 
 	const bool isUnique;
 	const HttpOptions options;
+
+	StringMap headers;
 };
 
 } // namespace dcpp
diff --git a/airdcpp-core/airdcpp/HttpDownload.cpp b/airdcpp-core/airdcpp/HttpDownload.cpp
index fc80bcf0..e883726c 100644
--- a/airdcpp-core/airdcpp/HttpDownload.cpp
+++ b/airdcpp-core/airdcpp/HttpDownload.cpp
@@ -44,6 +44,7 @@ void HttpDownload::on(HttpConnectionListener::Failed, HttpConnection*, const str
 
 void HttpDownload::on(HttpConnectionListener::Complete, HttpConnection*, const string& status_) noexcept {
 	status = status_;
+	headers = c->getHeaders();
 	f();
 }
 
diff --git a/airdcpp-core/airdcpp/HttpDownload.h b/airdcpp-core/airdcpp/HttpDownload.h
index 099bf37c..7c978a4d 100644
--- a/airdcpp-core/airdcpp/HttpDownload.h
+++ b/airdcpp-core/airdcpp/HttpDownload.h
@@ -30,6 +30,7 @@ struct HttpDownload : private HttpConnectionListener, private boost::noncopyable
 	HttpConnection* c;
 	string buf;
 	string status;
+	StringMap headers;
 	using CompletionF = std::function<void ()>;
 	CompletionF f;
 
diff --git a/airdcpp-core/airdcpp/UpdateManager.cpp b/airdcpp-core/airdcpp/UpdateManager.cpp
index af2e3549..531ce840 100644
--- a/airdcpp-core/airdcpp/UpdateManager.cpp
+++ b/airdcpp-core/airdcpp/UpdateManager.cpp
@@ -53,7 +53,7 @@ UpdateManager::UpdateManager() : lastIPUpdate(GET_TICK()) {
 	links.geoip = "http://geoip.airdcpp.net";
 	links.ipcheck4 = "http://checkip.dyndns.org/";
 	links.ipcheck6 = "http://checkip.dyndns.org/";
-	links.language = "http://languages.airdcpp.net/tx/checkLangVersion.php?lc=%[locale]";
+	links.language = "https://languages.airdcpp.net/tx/checkLangVersion.php?lc=%[locale]";
 
 	SettingsManager::getInstance()->registerChangeHandler({
 		SettingsManager::GET_USER_COUNTRY,
@@ -340,10 +340,14 @@ void UpdateManager::completeLanguageCheck() {
 	if(!conn->buf.empty()) {
 		if (Util::toDouble(conn->buf) > Localization::getCurLanguageVersion()) {
 			fire(UpdateManagerListener::LanguageDownloading());
-			conns[CONN_LANGUAGE_FILE] = make_unique<HttpDownload>(
-				links.language + PathUtil::getFileName(Localization::getCurLanguageFilePath()),
-				[this] { completeLanguageDownload(); }
-			);
+
+			auto url = conn->headers.find("X-File-Location");
+			if (url != conn->headers.end()) {
+				conns[CONN_LANGUAGE_FILE] = make_unique<HttpDownload>(
+					url->second,
+					[this] { completeLanguageDownload(); }
+				);
+			}
 		} else {
 			fire(UpdateManagerListener::LanguageFinished());
 		}
diff --git a/airdcpp-core/scripts/generate_stringdefs.py b/airdcpp-core/scripts/generate_stringdefs.py
index a8d73b0d..0189d4c9 100644
--- a/airdcpp-core/scripts/generate_stringdefs.py
+++ b/airdcpp-core/scripts/generate_stringdefs.py
@@ -79,6 +79,7 @@ def write_text(strings, name):
     (r'\n', '\n'),
     (r'\\', '\\'),
     (r'\"', '\"'),
+    (r'\'', '\''),
 ]
 
 # Convert StringDefs to Android resource XML file that is supported by Transifex
diff --git a/airdcpp-core/scripts/server/checkLangVersion.php b/airdcpp-core/scripts/server/checkLangVersion.php
index 78fb9f82..b6137d35 100644
--- a/airdcpp-core/scripts/server/checkLangVersion.php
+++ b/airdcpp-core/scripts/server/checkLangVersion.php
@@ -1,10 +1,32 @@
 <?php
-        $fileContent = @file_get_contents("/home/airdcpp-www/languages/tx/" . $_GET["locale"] . ".xml");
-        $pattern = '/(?<=\sVersion=")\d{1,9}(?=">)/';
-        if (preg_match($pattern, $fileContent, $matches)) {
-                echo $matches[0];
-        } else {
-                echo '0';
-        }
+	function removeFilename($url) {
+		$file_info = pathinfo($url);
+		return isset($file_info['extension'])
+			? str_replace($file_info['filename'] . "." . $file_info['extension'], "", $url)
+			: $url;
+	}
+	
+	if (!isset($_GET["lc"])) {
+		$fileContent = 'Locale missing';
+		http_response_code(400);
+		return;
+	}
+
+	header('X-File-Location: https://' . $_SERVER['HTTP_HOST'] . removeFilename($_SERVER['REQUEST_URI']) . $_GET["lc"] . ".xml");
+	
+	$filePath = getcwd() . '/' . $_GET["lc"] . ".xml";
+	if (!file_exists($filePath)) {
+		$fileContent = 'Invalid locale';
+		http_response_code(404);
+		return;
+	}
+	
+	$fileContent = @file_get_contents($filePath);
+	$pattern = '/(?<=\sRevision=")\d{1,9}(?=">)/';
+	if (preg_match($pattern, $fileContent, $matches)) {
+			echo $matches[0];
+	} else {
+			echo '0';
+	}
 ?>
 
diff --git a/airdcpp-core/scripts/update_languages.py b/airdcpp-core/scripts/update_languages.py
index 3c41a535..842ffc50 100644
--- a/airdcpp-core/scripts/update_languages.py
+++ b/airdcpp-core/scripts/update_languages.py
@@ -4,6 +4,7 @@
 
 import argparse
 import xml.etree.ElementTree as ET
+from pathlib import Path
 
 import glob, os
 import shutil
@@ -32,6 +33,7 @@ def get_new_version(file_path):
     (r'\n', '\n'),
     (r'\\', '\\'),
     (r'\"', '\"'),
+    (r'\'', '\''),
 ]
 
 
@@ -47,6 +49,7 @@ def convert_file(input_file, output_file):
     for child in source_root:
         string = ET.SubElement(output_strings, 'String', Name=child.attrib['name'])
 
+        text = child.text
         for str, replacement in replace_map:
             text = text.replace(str, replacement)
 
@@ -74,6 +77,9 @@ def has_changed(source_file_path, temp_file_path):
 def update_translation_files(source_directory, target_directory, force = False):
     temp_directory = os.path.join(source_directory, 'previous')
 
+    Path(temp_directory).mkdir(parents=True, exist_ok=True)
+    Path(target_directory).mkdir(parents=True, exist_ok=True)
+
     converted = 0
     unchanged = 0
     failed = 0