I just purchased a 2 axis gimbal for my gopro. I accidentally upgraded the firmware to version 2.4b7 and then I read I should only be using 2.2. Now my gimbal is dead and wont work or respond at all. I tried to flash the 2.2 back to it and it says it works with the GIU 2.4 but when I open the 2.2 GIU it wont respond or let me write and the gimbal just floats loose. Can someone please help me?

Thanks

Andy