diff --git a/packages/engine/AssetsManagerEx.cpp b/packages/engine/AssetsManagerEx.cpp
index 9a0147c4ec6d601a2245e89dad691fcb95f6a491..189a7bdb3e8d3d4e3412c31d0d4f66bcf806ff43 100644
--- a/packages/engine/AssetsManagerEx.cpp
+++ b/packages/engine/AssetsManagerEx.cpp
@@ -79,6 +79,7 @@ AssetsManagerEx::AssetsManagerEx(const std::string& manifestUrl, const std::stri
 , _currConcurrentTask(0)
 , _verifyCallback(nullptr)
 , _inited(false)
+, _canceled(false)
 {
     init(manifestUrl, storagePath);
 }
@@ -208,6 +209,7 @@ AssetsManagerEx* AssetsManagerEx::create(const std::string& manifestUrl, const s
 void AssetsManagerEx::initManifests()
 {
     _inited = true;
+    _canceled = false;
     // Init and load temporary manifest
     _tempManifest = new (std::nothrow) Manifest();
     if (_tempManifest)
@@ -269,6 +271,7 @@ bool AssetsManagerEx::loadLocalManifest(Manifest* localManifest, const std::stri
         return false;
     }
     _inited = true;
+    _canceled = false;
     // Reset storage path
     if (storagePath.size() > 0)
     {
@@ -1011,7 +1014,7 @@ void AssetsManagerEx::updateSucceed()
             }
 
             // Remove from delete list for safe, although this is not the case in general.
-            auto diff_itr = diff_map.find(dstPath);
+            auto diff_itr = diff_map.find(relativePath);
             if (diff_itr != diff_map.end()) {
                 diff_map.erase(diff_itr);
             }
@@ -1271,6 +1274,9 @@ void AssetsManagerEx::onError(const network::DownloadTask& task,
     }
     else
     {
+        if (_downloadingTask.find(task.identifier) != _downloadingTask.end()) {
+            _downloadingTask.erase(task.identifier);
+        }
         fileError(task.identifier, errorStr, errorCode, errorCodeInternal);
     }
 }
@@ -1345,6 +1351,10 @@ void AssetsManagerEx::onSuccess(const std::string &/*srcUrl*/, const std::string
     }
     else
     {
+        if (_downloadingTask.find(customId) != _downloadingTask.end()) {
+            _downloadingTask.erase(customId);
+        }
+
         bool ok = true;
         auto &assets = _remoteManifest->getAssets();
         auto assetIt = assets.find(customId);
@@ -1407,13 +1417,13 @@ void AssetsManagerEx::batchDownload()
 
 void AssetsManagerEx::queueDowload()
 {
-    if (_totalWaitToDownload == 0)
+    if (_totalWaitToDownload == 0 || (_canceled && _currConcurrentTask == 0))
     {
         this->onDownloadUnitsFinished();
         return;
     }
 
-    while (_currConcurrentTask < _maxConcurrentTask && _queue.size() > 0)
+    while (_currConcurrentTask < _maxConcurrentTask && _queue.size() > 0 && !_canceled)
     {
         std::string key = _queue.back();
         _queue.pop_back();
@@ -1421,8 +1431,8 @@ void AssetsManagerEx::queueDowload()
         _currConcurrentTask++;
         DownloadUnit& unit = _downloadUnits[key];
         _fileUtils->createDirectory(basename(unit.storagePath));
-        _downloader->createDownloadFileTask(unit.srcUrl, unit.storagePath, unit.customId);
-
+        auto downloadTask = _downloader->createDownloadFileTask(unit.srcUrl, unit.storagePath, unit.customId);
+        _downloadingTask.emplace(unit.customId, downloadTask);
         _tempManifest->setAssetDownloadState(key, Manifest::DownloadState::DOWNLOADING);
     }
     if (_percentByFile / 100 > _nextSavePoint)
@@ -1450,4 +1460,23 @@ void AssetsManagerEx::onDownloadUnitsFinished()
     }
 }
 
+void AssetsManagerEx::cancelUpdate()
+{
+    if (_canceled)
+	{
+        return;
+    }
+    _canceled = true;
+    std::vector<std::shared_ptr<const network::DownloadTask>> tasks;
+    for (const auto& it : _downloadingTask)
+    {
+        tasks.push_back(it.second);
+    }
+    for (const auto& it : tasks)
+    {
+        _downloader->abort(*it);
+    }
+    _downloadingTask.clear();
+}
+
 NS_CC_EXT_END
diff --git a/packages/engine/AssetsManagerEx.h b/packages/engine/AssetsManagerEx.h
index 7bd5be62e967fd3331cc1e761e7c372cd06c5a55..b09b16562abf42078ed6ae1081f8916554accb08 100644
--- a/packages/engine/AssetsManagerEx.h
+++ b/packages/engine/AssetsManagerEx.h
@@ -193,6 +193,10 @@ public:
      */
     void setEventCallback(const EventCallback& callback) {_eventCallback = callback;};
 
+    /** @brief Cancel update
+     */
+    void cancelUpdate();
+
 	/**
 	 * @brief 设置热更新地址,由于热更新地址会动态的发生变化，热更新的地址以下发的地址为准,设置热更新地址后，会自动的替换所有热更新的源地址
 	 */
@@ -404,6 +408,10 @@ private:
     //! Marker for whether the assets manager is inited
     bool _inited;
 
+    //! Marker for whether the update is canceled
+    bool _canceled;
+    //! Downloading task container
+    std::unordered_map<std::string, std::shared_ptr<const network::DownloadTask>> _downloadingTask;
 	/*是否启用资源下载类型*/
 	bool _isUsingAssetsType;
 	/*资源类型 ""为大厅 其它为子游戏包名*/
diff --git a/packages/fix_engine/main.js b/packages/fix_engine/main.js
index e2c132b70fc5d1816f6e95a348cb9626fea66bcb..e0d3b9012c840cec79de4e04d9c3eaefb5ac2c7e 100644
--- a/packages/fix_engine/main.js
+++ b/packages/fix_engine/main.js
@@ -219,7 +219,8 @@ module.exports = {
             if (creatorVersion == "2.4.0" ||
             creatorVersion == "2.4.1" ||
             creatorVersion == "2.4.2" ||
-            creatorVersion == "2.4.3"
+            creatorVersion == "2.4.3" ||
+            creatorVersion == "2.4.4"
             ) {
                 Editor.log("Creator 版本 : " + Editor.versions.CocosCreator);
                 Editor.log("Creator cocos2d 版本 : " + Editor.versions.cocos2d);
diff --git a/project.json b/project.json
index ec020d46e3efc70f75542a9f2abd5ee4db04ed5a..8f5986eccdf0267524d485a282b61cd56d79ac59 100644
--- a/project.json
+++ b/project.json
@@ -1,7 +1,7 @@
 {
   "engine": "cocos2d-html5",
   "packages": "packages",
-  "version": "2.4.3",
+  "version": "2.4.4",
   "id": "92b3c247-ed81-4660-8b62-79a3740a2e97",
   "isNew": false
 }
\ No newline at end of file
diff --git a/settings/project.json b/settings/project.json
index 293e689d9bda98d929dc8a15430035ce5b68c9e1..bd79e65e235254ca6c856ae7d002b20278bf77f9 100644
--- a/settings/project.json
+++ b/settings/project.json
@@ -172,7 +172,7 @@
   },
   "use-customize-simulator": true,
   "use-project-simulator-setting": false,
-  "last-module-event-record-time": 1609754655364,
+  "last-module-event-record-time": 1615434241540,
   "assets-sort-type": "name",
   "facebook": {
     "appID": "",