diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java b/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java
index 4c11c536..d46edfd5 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java
@@ -97,7 +97,7 @@ public void reload() throws Exception {
 
     public static final class Config {
     	private transient LaunchServer server = null;
-
+    	public boolean zipDownload;
         public String projectName;
 
         public String[] mirrors;
diff --git a/LauncherAPI/src/main/java/pro/gravit/launcher/downloader/ListDownloader.java b/LauncherAPI/src/main/java/pro/gravit/launcher/downloader/ListDownloader.java
index 5f795bc7..6d0c9f5b 100644
--- a/LauncherAPI/src/main/java/pro/gravit/launcher/downloader/ListDownloader.java
+++ b/LauncherAPI/src/main/java/pro/gravit/launcher/downloader/ListDownloader.java
@@ -36,10 +36,17 @@ public interface DownloadTotalCallback {
     public static class DownloadTask {
         public String apply;
         public long size;
+        public boolean isZip;
 
         public DownloadTask(String apply, long size) {
             this.apply = apply;
             this.size = size;
+            isZip = false;
+        }
+        public DownloadTask(String apply, long size, boolean isZip) {
+            this.apply = apply;
+            this.size = size;
+            this.isZip = isZip;
         }
     }
 
@@ -59,7 +66,7 @@ public void download(String base, List<DownloadTask> applies, Path dstDirFile, D
                     get.reset();
                     get.setURI(u);
                 }
-                httpclient.execute(get, new FileDownloadResponseHandler(targetPath, apply, callback, totalCallback, false));
+                httpclient.execute(get, new FileDownloadResponseHandler(targetPath, apply, callback, totalCallback));
             }
         }
     }
@@ -118,12 +125,12 @@ public FileDownloadResponseHandler(Path target) {
             totalCallback = null;
         }
 
-        public FileDownloadResponseHandler(Path target, DownloadTask task, DownloadCallback callback, DownloadTotalCallback totalCallback, boolean zip) {
+        public FileDownloadResponseHandler(Path target, DownloadTask task, DownloadCallback callback, DownloadTotalCallback totalCallback) {
             this.target = target;
             this.task = task;
             this.callback = callback;
             this.totalCallback = totalCallback;
-            this.zip = zip;
+            this.zip = task != null ? task.isZip : false;
         }
 
         public FileDownloadResponseHandler(Path target, DownloadCallback callback, DownloadTotalCallback totalCallback, boolean zip) {
@@ -137,16 +144,6 @@ public FileDownloadResponseHandler(Path target, DownloadCallback callback, Downl
         @Override
         public Path handleResponse(HttpResponse response) throws IOException {
             InputStream source = response.getEntity().getContent();
-            int returnCode = response.getStatusLine().getStatusCode();
-            if(returnCode != 200)
-            {
-                throw new IllegalStateException(String.format("Request download file %s return code %d", target.toString(), returnCode));
-            }
-            long contentLength = response.getEntity().getContentLength();
-            if (task != null && contentLength != task.size)
-            {
-                LogHelper.warning("Missing content length: expected %d | found %d", task.size, contentLength);
-            }
             if (zip) {
                 try (ZipInputStream input = IOHelper.newZipInput(source)) {
                     ZipEntry entry = input.getNextEntry();
@@ -171,13 +168,14 @@ public Path handleResponse(HttpResponse response) throws IOException {
             }
             if (callback != null && task != null) {
                 callback.stateChanged(task.apply, 0, task.size);
-                transfer(source, this.target, task.apply, task.size, callback, totalCallback);
+                transfer(source, target, task.apply, task.size < 0 ? source.available() : task.size, callback, totalCallback);
             } else
-                IOHelper.transfer(source, this.target);
+                IOHelper.transfer(source, IOHelper.newOutput(target));
             return this.target;
         }
     }
 
+
     public static void transfer(InputStream input, Path file, String filename, long size, DownloadCallback callback, DownloadTotalCallback totalCallback) throws IOException {
         try (OutputStream fileOutput = IOHelper.newOutput(file)) {
             long downloaded = 0L;
diff --git a/LauncherAPI/src/main/java/pro/gravit/launcher/request/update/UpdateRequest.java b/LauncherAPI/src/main/java/pro/gravit/launcher/request/update/UpdateRequest.java
index e6b9234e..d1385157 100644
--- a/LauncherAPI/src/main/java/pro/gravit/launcher/request/update/UpdateRequest.java
+++ b/LauncherAPI/src/main/java/pro/gravit/launcher/request/update/UpdateRequest.java
@@ -211,6 +211,10 @@ public UpdateRequestEvent requestDo(StandartClientWebSocketService service) thro
                     LogHelper.error(ex);
                 }
             }
+            if (isSmaller(((HashedDir)getPathed(name, e.hdir)).zipSize, entry.size())) {
+                adds.add(new ListDownloader.DownloadTask(path + ".zip", -1, true));
+                return HashedDir.WalkAction.SKIP_DIR;
+            }
             return HashedDir.WalkAction.CONTINUE;
         });
         totalSize = diff.mismatch.size();
@@ -230,7 +234,11 @@ public UpdateRequestEvent requestDo(StandartClientWebSocketService service) thro
         return e;
     }
 
-    // Instance
+    private boolean isSmaller(long zipSize, long size) {
+		return zipSize != -1 && zipSize < size;
+	}
+
+	// Instance
     @LauncherNetworkAPI
     private final String dirName;
     private transient final Path dir;
@@ -306,4 +314,11 @@ private void updateState(String filePath, long fileDownloaded, long fileSize) {
             stateCallback.call(new State(filePath, fileDownloaded, fileSize,
                     totalDownloaded, totalSize, Duration.between(startTime, Instant.now())));
     }
+    
+    private static HashedEntry getPathed(String path, HashedDir in) {
+    	String[] parts = path.split(IOHelper.CROSS_SEPARATOR);
+    	HashedEntry current = in;
+    	for (String part : parts) current = ((HashedDir) current).getEntry(part);
+    	return current;
+    }
 }
diff --git a/LauncherCore/src/main/java/pro/gravit/launcher/hasher/HashedDir.java b/LauncherCore/src/main/java/pro/gravit/launcher/hasher/HashedDir.java
index 3bacee9d..a3d92838 100644
--- a/LauncherCore/src/main/java/pro/gravit/launcher/hasher/HashedDir.java
+++ b/LauncherCore/src/main/java/pro/gravit/launcher/hasher/HashedDir.java
@@ -111,6 +111,9 @@ public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IO
     @LauncherNetworkAPI
     private final Map<String, HashedEntry> map = new HashMap<>(32);
 
+    @LauncherNetworkAPI
+    public long zipSize = -1;
+
     @LauncherAPI
     public HashedDir() {
     }
@@ -350,7 +353,7 @@ public void walk(CharSequence separator, WalkCallback callback) throws IOExcepti
     }
 
     public enum WalkAction {
-        STOP, CONTINUE
+        STOP, SKIP_DIR, CONTINUE
     }
 
     @FunctionalInterface
@@ -375,7 +378,9 @@ private WalkAction walk(String append, CharSequence separator, WalkCallback call
                 else newAppend = append + separator + entry.getKey();
                 WalkAction a = callback.walked(newAppend, entry.getKey(), e);
                 if (a == WalkAction.STOP) return a;
-                a = ((HashedDir) e).walk(newAppend, separator, callback, false);
+                if (a == WalkAction.CONTINUE)
+                	a = ((HashedDir) e).walk(newAppend, separator, callback, false);
+                else a = WalkAction.CONTINUE; // skip
                 if (a == WalkAction.STOP) return a;
             }
         }