Many thanks for contacting Gudsen support.
May I know what is wrong with your gimbal, so you want to update the firmware version?
If your Aircross is already running the latest firmware version, no need to update it again.
To help you properly, please help us verify the below information. Thanks
1. Serial Number on your gimbal. You can find it on the device itself, please.
2. Problem video
3. Receipt with purchase channel and order date.
4. Your location