diff --git a/LaunchServer/source/command/hash/DownloadAssetCommand.java b/LaunchServer/source/command/hash/DownloadAssetCommand.java
index f9526a3..8d9a1da 100644
--- a/LaunchServer/source/command/hash/DownloadAssetCommand.java
+++ b/LaunchServer/source/command/hash/DownloadAssetCommand.java
@@ -5,69 +5,19 @@
 import launcher.serialize.config.entry.StringConfigEntry;
 import launchserver.LaunchServer;
 import launchserver.command.Command;
+import launchserver.helpers.UnzipHelper;
 
-import java.io.IOException;
-import java.net.MalformedURLException;
-import java.net.URL;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Collections;
-import java.util.zip.ZipEntry;
-import java.util.zip.ZipInputStream;
 
 public final class DownloadAssetCommand extends Command
 {
-    private static String ASSET_URL_MASK;
-
     public DownloadAssetCommand(LaunchServer server)
     {
         super(server);
     }
 
-    public static void unpack(URL url, Path dir) throws IOException
-    {
-        try (ZipInputStream input = IOHelper.newZipInput(url))
-        {
-            for (ZipEntry entry = input.getNextEntry(); entry != null; entry = input.getNextEntry())
-            {
-                if (entry.isDirectory())
-                {
-                    continue; // Skip directories
-                }
-
-                // Unpack entry
-                String name = entry.getName();
-                LogHelper.subInfo("Downloading file: '%s'", name);
-                IOHelper.transfer(input, dir.resolve(IOHelper.toPath(name)));
-            }
-        }
-    }
-
-    public static void downloadZip(String[] mirrors, String mask, Path dir) {
-        for (String mirror : mirrors) {
-            if (downloadZip(mirror + mask, dir)) return;
-        }
-        LogHelper.error("Error download %s. All mirrors return error", dir.getFileName().toString());
-    }
-
-    public static boolean downloadZip(String link, Path dir) {
-        URL url = null;
-        // Нам тут IDEA мозг ебет
-        try {
-            url = new URL(link);
-        } catch (MalformedURLException e) {
-            e.printStackTrace();
-        }
-        LogHelper.debug("Try download %s", url.toString());
-        try {
-            unpack(url, dir);
-        } catch (IOException e) {
-            LogHelper.error("Download %s failed (%s: %s)", url.toString(), e.getClass().getName(), e.getMessage());
-            return false;
-        }
-        return true;
-    }
-
     @Override
     public String getArgsDescription()
     {
@@ -94,9 +44,9 @@
 
         // Download required asset
         LogHelper.subInfo("Downloading asset, it may take some time");
-        ASSET_URL_MASK = String.format("assets/%s.zip", version);
         String[] mirrors = server.config.mirrors.stream(StringConfigEntry.class).toArray(String[]::new);
-        downloadZip(mirrors, ASSET_URL_MASK, assetDir);
+        String assetMask = String.format("assets/%s.zip", version);
+        UnzipHelper.downloadZip(mirrors, assetMask, assetDir);
 
         // Finished
         server.syncUpdatesDir(Collections.singleton(dirName));
diff --git a/LaunchServer/source/command/hash/DownloadClientCommand.java b/LaunchServer/source/command/hash/DownloadClientCommand.java
index f6886c9..251d9df 100644
--- a/LaunchServer/source/command/hash/DownloadClientCommand.java
+++ b/LaunchServer/source/command/hash/DownloadClientCommand.java
@@ -9,10 +9,10 @@
 import launcher.serialize.config.entry.StringConfigEntry;
 import launchserver.LaunchServer;
 import launchserver.command.Command;
+import launchserver.helpers.UnzipHelper;
 
 import java.io.BufferedReader;
 import java.io.BufferedWriter;
-import java.net.URL;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Arrays;
@@ -20,8 +20,6 @@
 
 public final class DownloadClientCommand extends Command
 {
-    private static String CLIENT_URL_MASK;
-
     public DownloadClientCommand(LaunchServer server)
     {
         super(server);
@@ -53,12 +51,12 @@
 
         // Download required client
         LogHelper.subInfo("Downloading client, it may take some time");
-        CLIENT_URL_MASK = String.format("clients/%s.zip", version);
         String[] mirrors = server.config.mirrors.stream(StringConfigEntry.class).toArray(String[]::new);
-        DownloadAssetCommand.downloadZip(mirrors, CLIENT_URL_MASK, clientDir);
+        String clientMask = String.format("clients/%s.zip", version);
+        UnzipHelper.downloadZip(mirrors, clientMask, clientDir);
 
         // Create profile file
-        LogHelper.subInfo("Creaing profile file: '%s'", dirName);
+        LogHelper.subInfo("Creating profile file: '%s'", dirName);
         ClientProfile client;
         String profilePath;
 
diff --git a/LaunchServer/source/helpers/HTTPRequestHelper.java b/LaunchServer/source/helpers/HTTPRequestHelper.java
index a17ff32..c071b25 100644
--- a/LaunchServer/source/helpers/HTTPRequestHelper.java
+++ b/LaunchServer/source/helpers/HTTPRequestHelper.java
@@ -16,11 +16,7 @@
     public static boolean fileExsist(String url) throws IOException {
         HttpURLConnection request = makeRequest(url, "HEAD");
         int responseCode = request.getResponseCode();
-        if (responseCode >= 200 && responseCode < 300) {
-            return true;
-        } else {
-            return false;
-        }
+        return responseCode >= 200 && responseCode < 300;
     }
 
     public static String getFile(String url) throws IOException {
diff --git a/LaunchServer/source/helpers/UnzipHelper.java b/LaunchServer/source/helpers/UnzipHelper.java
new file mode 100644
index 0000000..ce67e72
--- /dev/null
+++ b/LaunchServer/source/helpers/UnzipHelper.java
@@ -0,0 +1,58 @@
+package launchserver.helpers;
+
+import launcher.helper.IOHelper;
+import launcher.helper.LogHelper;
+
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.nio.file.Path;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+
+public class UnzipHelper {
+    private static void unpack(URL url, Path dir) throws IOException
+    {
+        try (ZipInputStream input = IOHelper.newZipInput(url))
+        {
+            for (ZipEntry entry = input.getNextEntry(); entry != null; entry = input.getNextEntry())
+            {
+                if (entry.isDirectory())
+                {
+                    continue; // Skip directories
+                }
+
+                // Unpack entry
+                String name = entry.getName();
+                LogHelper.subInfo("Downloading file: '%s'", name);
+                IOHelper.transfer(input, dir.resolve(IOHelper.toPath(name)));
+            }
+        }
+    }
+
+    public static void downloadZip(String[] mirrors, String mask, Path dir) {
+        for (String mirror : mirrors) {
+            if (downloadZip(mirror + mask, dir)) return;
+        }
+        LogHelper.error("Error download %s. All mirrors return error", dir.getFileName().toString());
+    }
+
+    private static boolean downloadZip(String link, Path dir) {
+        URL url = null;
+        // Нам тут IDEA мозг ебет
+        try {
+            url = new URL(link);
+        } catch (MalformedURLException e) {
+            e.printStackTrace();
+        }
+        LogHelper.debug("Try download %s", url.toString());
+        try {
+            unpack(url, dir);
+        } catch (IOException e) {
+            LogHelper.error("Download %s failed (%s: %s)", url.toString(), e.getClass().getName(), e.getMessage());
+            return false;
+        }
+        return true;
+    }
+
+}
diff --git a/buildnumber b/buildnumber
index 96b0eda..c75ac8c 100644
--- a/buildnumber
+++ b/buildnumber
@@ -1 +1 @@
-520, 14.02.2021
\ No newline at end of file
+522, 15.02.2021
\ No newline at end of file