diff --git a/Launcher/runtime/config.js b/Launcher/runtime/config.js
index 992277a5..7966e1ee 100644
--- a/Launcher/runtime/config.js
+++ b/Launcher/runtime/config.js
@@ -16,6 +16,12 @@ var config = {
     autoEnterDefault: false, // Should autoEnter be enabled by default?
     fullScreenDefault: false, // Should fullScreen be enabled by default?
     ramDefault: 1024, // Default RAM amount (0 for auto)
+
+    jvm: {
+        enable: false,
+        jvmMustdie32Dir: "jre-8u202-win32",
+        jvmMustdie64Dir: "jre-8u202-win64",
+    }
 };
 
 DirBridge.dir = DirBridge.getLauncherDir(config.dir);
diff --git a/Launcher/runtime/dialog/dialog.js b/Launcher/runtime/dialog/dialog.js
index 631d3744..1c23beb4 100644
--- a/Launcher/runtime/dialog/dialog.js
+++ b/Launcher/runtime/dialog/dialog.js
@@ -305,26 +305,51 @@ function doAuth(login, rsaPassword, auth_type) {
 function doUpdate(profile, pp, accessToken) {
     var digest = profile.isUpdateFastCheck();
     overlay.swap(0, update.overlay, function(event) {
-
-        update.resetOverlay("Обновление файлов ресурсов");
-        var assetDirName = profile.getAssetDir();
-        var assetDir = settings.updatesDir.resolve(assetDirName);
-        var assetMatcher = profile.getAssetUpdateMatcher();
-        makeSetProfileRequest(profile, function() {
-            ClientLauncher.setProfile(profile);
-            makeUpdateRequest(assetDirName, assetDir, assetMatcher, digest, function(assetHDir) {
-                settings.putHDir(assetDirName, assetDir, assetHDir.hdir);
-
-                update.resetOverlay("Обновление файлов клиента");
-                var clientDirName = profile.getDir();
-                var clientDir = settings.updatesDir.resolve(clientDirName);
-                var clientMatcher = profile.getClientUpdateMatcher();
-                makeUpdateRequest(clientDirName, clientDir, clientMatcher, digest, function(clientHDir) {
-                    settings.putHDir(clientDirName, clientDir, clientHDir.hdir);
-                    doLaunchClient(assetDir, assetHDir.hdir, clientDir, clientHDir.hdir, profile, pp, accessToken);
+        if (config.jvm.enable) {
+            makeSetProfileRequest(profile, function() {
+                ClientLauncher.setProfile(profile);
+                var jvmDir = settings.updatesDir.resolve(jvmDirName);
+                update.resetOverlay("Обновление файлов JVM");
+                makeUpdateRequest(jvmDirName, jvmDir, null, digest, function(jvmHDir) {
+                    ClientLauncher.setJavaBinPath(jvmDir);
+                    update.resetOverlay("Обновление файлов ресурсов");
+                    var assetDirName = profile.getAssetDir();
+                    var assetDir = settings.updatesDir.resolve(assetDirName);
+                    var assetMatcher = profile.getAssetUpdateMatcher();
+                    makeUpdateRequest(assetDirName, assetDir, assetMatcher, digest, function(assetHDir) {
+                        settings.putHDir(assetDirName, assetDir, assetHDir.hdir);
+                        update.resetOverlay("Обновление файлов клиента");
+                        var clientDirName = profile.getDir();
+                        var clientDir = settings.updatesDir.resolve(clientDirName);
+                        var clientMatcher = profile.getClientUpdateMatcher();
+                        makeUpdateRequest(clientDirName, clientDir, clientMatcher, digest, function(clientHDir) {
+                            settings.putHDir(clientDirName, clientDir, clientHDir.hdir);
+                            doLaunchClient(assetDir, assetHDir.hdir, clientDir, clientHDir.hdir, profile, pp, accessToken);
+                        });
+                    });
                 });
             });
-        });
+        } else {
+            update.resetOverlay("Обновление файлов ресурсов");
+            var assetDirName = profile.getAssetDir();
+            var assetDir = settings.updatesDir.resolve(assetDirName);
+            var assetMatcher = profile.getAssetUpdateMatcher();
+            makeSetProfileRequest(profile, function() {
+                ClientLauncher.setProfile(profile);
+                makeUpdateRequest(assetDirName, assetDir, assetMatcher, digest, function(assetHDir) {
+                    settings.putHDir(assetDirName, assetDir, assetHDir.hdir);
+
+                    update.resetOverlay("Обновление файлов клиента");
+                    var clientDirName = profile.getDir();
+                    var clientDir = settings.updatesDir.resolve(clientDirName);
+                    var clientMatcher = profile.getClientUpdateMatcher();
+                    makeUpdateRequest(clientDirName, clientDir, clientMatcher, digest, function(clientHDir) {
+                        settings.putHDir(clientDirName, clientDir, clientHDir.hdir);
+                        doLaunchClient(assetDir, assetHDir.hdir, clientDir, clientHDir.hdir, profile, pp, accessToken);
+                    });
+                });
+            });
+        }
     });
 }
 
diff --git a/Launcher/runtime/init.js b/Launcher/runtime/init.js
index 1db04f3b..9b1ccb43 100644
--- a/Launcher/runtime/init.js
+++ b/Launcher/runtime/init.js
@@ -79,6 +79,18 @@ function setRootParent(parent) {
 
 function start(args) {
 
+    if (config.jvm.enable) {
+        switch (JVMHelper.OS_TYPE) {
+            case JVMHelperOS.MUSTDIE:
+                jvmDirName = JVMHelper.OS_BITS === 32 ? config.jvm.jvmMustdie32Dir : 
+                    jvmDirName = JVMHelper.OS_BITS === 64 ? config.jvm.jvmMustdie64Dir : config.jvm.enable = false;
+                break;
+            default:
+                config.jvm.enable = false;
+                break;
+        }
+    }
+
     LogHelper.debug("Setting FX properties");
     java.lang.System.setProperty("prism.lcdtext", "false");
 
diff --git a/LauncherAPI/src/main/java/pro/gravit/launcher/profiles/ClientProfile.java b/LauncherAPI/src/main/java/pro/gravit/launcher/profiles/ClientProfile.java
index 7622aa21..4762efb5 100644
--- a/LauncherAPI/src/main/java/pro/gravit/launcher/profiles/ClientProfile.java
+++ b/LauncherAPI/src/main/java/pro/gravit/launcher/profiles/ClientProfile.java
@@ -35,7 +35,10 @@ public enum Version {
         MC113("1.13", 393),
         MC1131("1.13.1", 401),
         MC1132("1.13.2", 402),
-        MC114("1.14", 477);
+        MC114("1.14", 477),
+        MC1141("1.14.1", 480),
+        MC1142("1.14.2", 485),
+        MC1143("1.14.3", 490);
         private static final Map<String, Version> VERSIONS;
 
         static {
diff --git a/LauncherCore/src/main/java/pro/gravit/utils/helper/IOHelper.java b/LauncherCore/src/main/java/pro/gravit/utils/helper/IOHelper.java
index 4864c6ed..77b34f1b 100644
--- a/LauncherCore/src/main/java/pro/gravit/utils/helper/IOHelper.java
+++ b/LauncherCore/src/main/java/pro/gravit/utils/helper/IOHelper.java
@@ -62,6 +62,7 @@
 import pro.gravit.launcher.LauncherAPI;
 
 public final class IOHelper {
+	public static final long MB32 = 1 << 25;
     private static final class DeleteDirVisitor extends SimpleFileVisitor<Path> {
         private final Path dir;
         private final boolean self;