diff --git a/.gitea/scripts/upload_installer_to_ks3.py b/.gitea/scripts/upload_installer_to_ks3.py
index ba343ce..b6c6b12 100644
--- a/.gitea/scripts/upload_installer_to_ks3.py
+++ b/.gitea/scripts/upload_installer_to_ks3.py
@@ -110,7 +110,6 @@ def upload_installer(connection, installer_path):
         
         # Upload file with public read permission and progress tracking
         # Use cb parameter for progress callback (called every 5% or every 10MB)
-        # 🔥 启用分片上传提高大文件上传成功率
         key.set_contents_from_filename(
             str(installer_path),
             headers={
@@ -122,9 +121,7 @@ def upload_installer(connection, installer_path):
             },
             policy='public-read',  # Set ACL policy
             cb=progress_callback,  # Progress callback function
-            num_cb=10,  # Call callback 10 times during upload (every 10%)
-            multipart=True,  # 🔥 启用分片上传
-            chunk_size=10485760  # 🔥 10MB每片，提高上传稳定性
+            num_cb=10  # Call callback 10 times during upload (every 10%)
         )
         
         # Generate download URL (using KS3 third-level domain format)
@@ -157,7 +154,6 @@ def main():
     logger.info(f"Bucket: {KS3_BUCKET}")
     logger.info(f"Target directory: {KS3_PREFIX}")
     logger.info("Proxy disabled: Direct connection to KS3")
-    logger.info("Multipart upload: Enabled (10MB chunks)")
     logger.info("=" * 70)
     
     installer_path = find_latest_installer()