diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java b/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java
index d7cd9bb7..2f5d8bcb 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java
@@ -50,7 +50,7 @@ public final class LaunchServerConfig {
 
     public static LaunchServerConfig getDefault(LaunchServer.LaunchServerEnv env) {
         LaunchServerConfig newConfig = new LaunchServerConfig();
-        newConfig.mirrors = new String[]{"https://mirror.gravit.pro/", "https://gravit-launcher-mirror.storage.googleapis.com/"};
+        newConfig.mirrors = new String[]{"https://mirror.gravit.pro/5.2.x/", "https://gravit-launcher-mirror.storage.googleapis.com/"};
         newConfig.launch4j = new LaunchServerConfig.ExeConf();
         newConfig.launch4j.enabled = true;
         newConfig.launch4j.copyright = "© GravitLauncher Team";
@@ -169,6 +169,18 @@ public void verify() {
         if (netty == null) {
             throw new NullPointerException("Netty must not be null");
         }
+        // Mirror check
+        {
+            boolean updateMirror = Boolean.getBoolean("launchserver.config.disableUpdateMirror");
+            if(!updateMirror) {
+                for(int i=0;i < mirrors.length;++i) {
+                    if("https://mirror.gravit.pro/".equals(mirrors[i])) {
+                        logger.warn("Replace mirror 'https://mirror.gravit.pro/' to 'https://mirror.gravit.pro/5.2.x/'. If you really need to use original url, use '-Dlaunchserver.config.disableUpdateMirror=true'");
+                        mirrors[i] = "https://mirror.gravit.pro/5.2.x/";
+                    }
+                }
+            }
+        }
     }
 
     public void init(LaunchServer.ReloadType type) {
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/helper/MakeProfileHelper.java b/LaunchServer/src/main/java/pro/gravit/launchserver/helper/MakeProfileHelper.java
index 4bee8597..405f93be 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/helper/MakeProfileHelper.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/helper/MakeProfileHelper.java
@@ -97,6 +97,17 @@ public static ClientProfile makeProfile(ClientProfile.Version version, String ti
             optionalOther.triggersList = List.of(nonMacTrigger);
             optionals.add(optionalOther);
         }
+        Optional<MakeProfileOptionLog4j> logFile = findOption(options, MakeProfileOptionLog4j.class);
+        if(logFile.isPresent()) {
+            var log4jOption = logFile.get();
+            if(log4jOption.logFile != null) {
+                jvmArgs.add("-Dlog4j.configurationFile=".concat(logFile.get().logFile));
+            } else if(log4jOption.affected) {
+                if(version.compareTo(ClientProfile.Version.MC117) >= 0 && version.compareTo(ClientProfile.Version.MC118) < 0) {
+                    jvmArgs.add("-Dlog4j2.formatMsgNoLookups=true");
+                }
+            }
+        }
         if (version.compareTo(ClientProfile.Version.MC117) >= 0) {
             builder.setMinJavaVersion(16);
             builder.setRecommendJavaVersion(16);
@@ -156,18 +167,52 @@ public static String getMainClassByVersion(ClientProfile.Version version, MakePr
         return "net.minecraft.client.main.Main";
     }
 
+    private static boolean isAffectedLog4jVersion(String version) {
+        if(version == null) {
+            return true;
+        }
+        String[] split = version.split("\\.");
+        if(split.length < 2) return true;
+        if(!split[0].equals("2")) return false;
+        return Integer.parseInt(split[1]) < 15;
+    }
+
+    private static String getLog4jVersion(Path dir) throws IOException {
+        Path log4jCore = dir.resolve("org/apache/logging/log4j/log4j-core");
+        if(Files.exists(log4jCore)) {
+            Path target = Files.list(log4jCore).findFirst().orElse(null);
+            if(target != null) {
+                return target.getFileName().toString();
+            }
+        }
+        return null;
+    }
+
     public static MakeProfileOption[] getMakeProfileOptionsFromDir(Path dir, ClientProfile.Version version) throws IOException {
         List<MakeProfileOption> options = new ArrayList<>(2);
-        if (version.compareTo(ClientProfile.Version.MC1122) <= 0) {
-            if (Files.exists(dir.resolve("forge.jar"))) {
+        if (Files.exists(dir.resolve("forge.jar"))) {
+            options.add(new MakeProfileOptionForge());
+        }
+        else if (Files.exists(dir.resolve("libraries/net/minecraftforge/forge"))) {
+            if(version.compareTo(ClientProfile.Version.MC1122) > 0) {
+                options.add(new MakeProfileOptionForge(dir));
+            } else {
                 options.add(new MakeProfileOptionForge());
             }
-        } else {
-            if (Files.exists(dir.resolve("libraries/net/minecraftforge/forge"))) {
-                options.add(new MakeProfileOptionForge(dir));
-            }
-            if (Files.exists(dir.resolve("libraries/net/fabricmc/fabric-loader"))) {
-                options.add(new MakeProfileOptionFabric(dir));
+        }
+        if (Files.exists(dir.resolve("libraries/net/fabricmc/fabric-loader"))) {
+            options.add(new MakeProfileOptionFabric(dir));
+        }
+        {
+            String log4jVersion = getLog4jVersion(dir);
+            if(log4jVersion != null) {
+
+                boolean affected = isAffectedLog4jVersion(log4jVersion);
+                if(Files.exists(dir.resolve("log4j2_custom.xml"))) {
+                    options.add(new MakeProfileOptionLog4j(affected, "log4j2_custom.xml"));
+                } else {
+                    options.add(new MakeProfileOptionLog4j(affected, null));
+                }
             }
         }
         if (Files.exists(dir.resolve("liteloader.jar"))) {
@@ -176,7 +221,7 @@ public static MakeProfileOption[] getMakeProfileOptionsFromDir(Path dir, ClientP
         if (Files.exists(dir.resolve("libraries/org/lwjgl/lwjgl/3.2.2")) && Files.exists(dir.resolve("libraries/org/lwjgl/lwjgl/3.2.1"))) {
             options.add(new MakeProfileOptionLwjgl());
         }
-        if (version.compareTo(ClientProfile.Version.MC1122) <= 0) {
+        if (Files.exists(dir.resolve("libraries/forge/launchwrapper-1.12-launcherfixed.jar.jar")) || Files.exists(dir.resolve("libraries/net/minecraft/launchwrapper"))) {
             options.add(new MakeProfileOptionLaunchWrapper());
         }
         return options.toArray(new MakeProfileOption[0]);
@@ -193,6 +238,16 @@ private static Path findFirstMavenFile(Path path) throws IOException {
     public interface MakeProfileOption {
     }
 
+    public static class MakeProfileOptionLog4j implements MakeProfileOption {
+        public boolean affected;
+        public String logFile;
+
+        public MakeProfileOptionLog4j(boolean lower15, String logFile) {
+            this.affected = lower15;
+            this.logFile = logFile;
+        }
+    }
+
     public static class MakeProfileOptionForge implements MakeProfileOption {
         public String launchTarget;
         public String forgeVersion;
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/manangers/LaunchServerGsonManager.java b/LaunchServer/src/main/java/pro/gravit/launchserver/manangers/LaunchServerGsonManager.java
index f94dbd85..a33d5755 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/manangers/LaunchServerGsonManager.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/manangers/LaunchServerGsonManager.java
@@ -33,7 +33,9 @@ public LaunchServerGsonManager(LaunchServerModulesManager modulesManager) {
     @Override
     public void registerAdapters(GsonBuilder builder) {
         super.registerAdapters(builder);
-        builder.registerTypeAdapterFactory(RecordTypeAdapterFactory.DEFAULT);
+        builder.registerTypeAdapterFactory(RecordTypeAdapterFactory.builder()
+                        .allowMissingComponentValues()
+                        .create());
         builder.registerTypeAdapter(TextureProvider.class, new UniversalJsonAdapter<>(TextureProvider.providers));
         builder.registerTypeAdapter(AuthCoreProvider.class, new UniversalJsonAdapter<>(AuthCoreProvider.providers));
         builder.registerTypeAdapter(PasswordVerifier.class, new UniversalJsonAdapter<>(PasswordVerifier.providers));
diff --git a/Launcher/src/main/java/pro/gravit/launcher/client/ClientLauncherEntryPoint.java b/Launcher/src/main/java/pro/gravit/launcher/client/ClientLauncherEntryPoint.java
index 8453a7d1..4c645a7b 100644
--- a/Launcher/src/main/java/pro/gravit/launcher/client/ClientLauncherEntryPoint.java
+++ b/Launcher/src/main/java/pro/gravit/launcher/client/ClientLauncherEntryPoint.java
@@ -119,7 +119,8 @@ public static void main(String[] args) throws Throwable {
 
         // Verify ClientLauncher sign and classpath
         LogHelper.debug("Verifying ClientLauncher sign and classpath");
-        List<URL> classpath = resolveClassPath(clientDir, params.actions, params.profile).map(IOHelper::toURL).collect(Collectors.toList());
+        List<Path> classpath = resolveClassPath(clientDir, params.actions, params.profile).collect(Collectors.toList());
+        List<URL> classpathURLs = classpath.stream().map(IOHelper::toURL).collect(Collectors.toList());
         // Start client with WatchService monitoring
         boolean digest = !profile.isUpdateFastCheck();
         RequestService service;
@@ -145,7 +146,8 @@ public static void main(String[] args) throws Throwable {
         }
         ClientProfile.ClassLoaderConfig classLoaderConfig = profile.getClassLoaderConfig();
         if (classLoaderConfig == ClientProfile.ClassLoaderConfig.LAUNCHER) {
-            ClientClassLoader classLoader = new ClientClassLoader(classpath.toArray(new URL[0]), ClassLoader.getSystemClassLoader());
+            ClientClassLoader classLoader = new ClientClassLoader(classpathURLs.toArray(new URL[0]), ClassLoader.getSystemClassLoader());
+            System.setProperty("java.class.path", classpath.stream().map(Path::toString).collect(Collectors.joining(File.pathSeparator)));
             ClientLauncherEntryPoint.classLoader = classLoader;
             Thread.currentThread().setContextClassLoader(classLoader);
             classLoader.nativePath = clientDir.resolve("natives").toString();
@@ -156,19 +158,19 @@ public static void main(String[] args) throws Throwable {
             ClientService.baseURLs = classLoader.getURLs();
         } else if (classLoaderConfig == ClientProfile.ClassLoaderConfig.AGENT) {
             ClientLauncherEntryPoint.classLoader = ClassLoader.getSystemClassLoader();
-            classpath.add(IOHelper.getCodeSource(ClientLauncherEntryPoint.class).toUri().toURL());
-            for (URL url : classpath) {
+            classpathURLs.add(IOHelper.getCodeSource(ClientLauncherEntryPoint.class).toUri().toURL());
+            for (URL url : classpathURLs) {
                 LauncherAgent.addJVMClassPath(Paths.get(url.toURI()));
             }
             ClientService.instrumentation = LauncherAgent.inst;
             ClientService.nativePath = clientDir.resolve("natives").toString();
             LauncherEngine.modulesManager.invokeEvent(new ClientProcessClassLoaderEvent(engine, classLoader, profile));
             ClientService.classLoader = classLoader;
-            ClientService.baseURLs = classpath.toArray(new URL[0]);
+            ClientService.baseURLs = classpathURLs.toArray(new URL[0]);
         } else if (classLoaderConfig == ClientProfile.ClassLoaderConfig.SYSTEM_ARGS) {
             ClientLauncherEntryPoint.classLoader = ClassLoader.getSystemClassLoader();
             ClientService.classLoader = ClassLoader.getSystemClassLoader();
-            ClientService.baseURLs = classpath.toArray(new URL[0]);
+            ClientService.baseURLs = classpathURLs.toArray(new URL[0]);
         }
         AuthService.username = params.playerProfile.username;
         AuthService.uuid = params.playerProfile.uuid;
diff --git a/LauncherAPI/src/main/java/pro/gravit/launcher/profiles/PlayerProfile.java b/LauncherAPI/src/main/java/pro/gravit/launcher/profiles/PlayerProfile.java
index 115500b7..09ebeac1 100644
--- a/LauncherAPI/src/main/java/pro/gravit/launcher/profiles/PlayerProfile.java
+++ b/LauncherAPI/src/main/java/pro/gravit/launcher/profiles/PlayerProfile.java
@@ -15,7 +15,7 @@ public final class PlayerProfile {
 
     public PlayerProfile(UUID uuid, String username, Texture skin, Texture cloak) {
         this.uuid = Objects.requireNonNull(uuid, "uuid");
-        this.username = VerifyHelper.verifyUsername(username);
+        this.username = username;
         this.skin = skin;
         this.cloak = cloak;
     }
diff --git a/LauncherAPI/src/main/java/pro/gravit/launcher/request/auth/CheckServerRequest.java b/LauncherAPI/src/main/java/pro/gravit/launcher/request/auth/CheckServerRequest.java
index e8c79910..ac647341 100644
--- a/LauncherAPI/src/main/java/pro/gravit/launcher/request/auth/CheckServerRequest.java
+++ b/LauncherAPI/src/main/java/pro/gravit/launcher/request/auth/CheckServerRequest.java
@@ -14,7 +14,7 @@ public final class CheckServerRequest extends Request<CheckServerRequestEvent> i
 
 
     public CheckServerRequest(String username, String serverID) {
-        this.username = VerifyHelper.verifyUsername(username);
+        this.username = username;
         this.serverID = VerifyHelper.verifyServerID(serverID);
     }
 
diff --git a/LauncherAPI/src/main/java/pro/gravit/launcher/request/auth/JoinServerRequest.java b/LauncherAPI/src/main/java/pro/gravit/launcher/request/auth/JoinServerRequest.java
index 19e028cc..6a3cf1ab 100644
--- a/LauncherAPI/src/main/java/pro/gravit/launcher/request/auth/JoinServerRequest.java
+++ b/LauncherAPI/src/main/java/pro/gravit/launcher/request/auth/JoinServerRequest.java
@@ -18,7 +18,7 @@ public final class JoinServerRequest extends Request<JoinServerRequestEvent> imp
 
 
     public JoinServerRequest(String username, String accessToken, String serverID) {
-        this.username = VerifyHelper.verifyUsername(username);
+        this.username = username;
         this.accessToken = accessToken;
         this.serverID = VerifyHelper.verifyServerID(serverID);
     }
diff --git a/LauncherAPI/src/main/java/pro/gravit/launcher/request/uuid/BatchProfileByUsernameRequest.java b/LauncherAPI/src/main/java/pro/gravit/launcher/request/uuid/BatchProfileByUsernameRequest.java
index b120341c..20708419 100644
--- a/LauncherAPI/src/main/java/pro/gravit/launcher/request/uuid/BatchProfileByUsernameRequest.java
+++ b/LauncherAPI/src/main/java/pro/gravit/launcher/request/uuid/BatchProfileByUsernameRequest.java
@@ -21,8 +21,6 @@ public BatchProfileByUsernameRequest(String... usernames) throws IOException {
             this.list[i].username = usernames[i];
         }
         IOHelper.verifyLength(usernames.length, IOHelper.MAX_BATCH_SIZE);
-        for (String username : usernames)
-            VerifyHelper.verifyUsername(username);
     }
 
     @Override
diff --git a/LauncherAPI/src/main/java/pro/gravit/launcher/request/uuid/ProfileByUsernameRequest.java b/LauncherAPI/src/main/java/pro/gravit/launcher/request/uuid/ProfileByUsernameRequest.java
index 9b7c1d8b..43c5c02a 100644
--- a/LauncherAPI/src/main/java/pro/gravit/launcher/request/uuid/ProfileByUsernameRequest.java
+++ b/LauncherAPI/src/main/java/pro/gravit/launcher/request/uuid/ProfileByUsernameRequest.java
@@ -12,7 +12,7 @@ public final class ProfileByUsernameRequest extends Request<ProfileByUsernameReq
 
 
     public ProfileByUsernameRequest(String username) {
-        this.username = VerifyHelper.verifyUsername(username);
+        this.username = username;
     }
 
     @Override
diff --git a/LauncherCore/src/main/java/pro/gravit/utils/Version.java b/LauncherCore/src/main/java/pro/gravit/utils/Version.java
index e8c1b678..af759962 100644
--- a/LauncherCore/src/main/java/pro/gravit/utils/Version.java
+++ b/LauncherCore/src/main/java/pro/gravit/utils/Version.java
@@ -6,7 +6,7 @@ public final class Version implements Comparable<Version> {
 
     public static final int MAJOR = 5;
     public static final int MINOR = 2;
-    public static final int PATCH = 7;
+    public static final int PATCH = 8;
     public static final int BUILD = 1;
     public static final Version.Type RELEASE = Type.STABLE;
     public final int major;
diff --git a/LauncherCore/src/main/java/pro/gravit/utils/helper/JavaHelper.java b/LauncherCore/src/main/java/pro/gravit/utils/helper/JavaHelper.java
index ca23555f..ad70ca4f 100644
--- a/LauncherCore/src/main/java/pro/gravit/utils/helper/JavaHelper.java
+++ b/LauncherCore/src/main/java/pro/gravit/utils/helper/JavaHelper.java
@@ -3,6 +3,7 @@
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
+import java.nio.file.InvalidPathException;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.ArrayList;
@@ -77,6 +78,8 @@ public synchronized static List<JavaVersion> findJava() {
                     tryAddJava(javaPaths, result, JavaVersion.getByPath(p1));
                     trySearchJava(javaPaths, result, p1.getParent());
                 }
+            } catch (InvalidPathException ignored) {
+
             } catch (IOException e) {
                 LogHelper.error(e);
             }
diff --git a/build.gradle b/build.gradle
index 8d1bbf49..a72ae376 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@
     id 'org.openjfx.javafxplugin' version '0.0.10' apply false
 }
 group = 'pro.gravit.launcher'
-version = '5.2.7'
+version = '5.2.8'
 
 apply from: 'props.gradle'
 
diff --git a/modules b/modules
index dced1548..4eb5b326 160000
--- a/modules
+++ b/modules
@@ -1 +1 @@
-Subproject commit dced154854c59d8b1e816ebfb1f51baaaeafabfb
+Subproject commit 4eb5b32678202efcff2d7cf8f87bdf32eab5384d
diff --git a/props.gradle b/props.gradle
index 330903d1..6d5b39ab 100644
--- a/props.gradle
+++ b/props.gradle
@@ -1,7 +1,7 @@
 project.ext {
     verAsm = '9.2'
     verNetty = '4.1.70.Final'
-    verOshiCore = '5.8.5'
+    verOshiCore = '6.0.0'
     verJunit = '5.8.2'
     verGuavaC = '30.1.1-jre'
     verJansi = '2.3.4'
@@ -11,7 +11,7 @@
     verGson = '2.8.9'
     verBcpkix = '1.70'
     verSlf4j = '1.7.32'
-    verLog4j = '2.15.0'
+    verLog4j = '2.17.1'
     verMySQLConn = '8.0.27'
     verPostgreSQLConn = '42.3.1'
     verProguard = '7.2.0-beta2'