I have just updated via my home wifi but noticed that the aircraft firmware is showing as 01.00.0300. So I select Check for Updates and get Server error. Wait a moment and try again (Code:-4) Repeated attempts have not fixed this.

Did you check if you are signed in into your dji account?

I managed to resolve this by doing a factory reset, then doing the update once again.

spike001 Posted at 10-27 06:23
I managed to resolve this by doing a factory reset, then doing the update once again.

Hi there. Thank you for the update and we are glad to know that the concern is resolved. Should you have any concerns or inquiries, please do not hesitate to reach us here at DJI Forum.