A few weeks ago it was still possible to downgrade from .512 to older firmware via DJI. DJI does not allow downgrade this time. As far as I know, there is currently no way to downgrade from .512!
I thought that the v2 of nld fixed this issue with downgrade etc? I just want to get fcc+boost (nfz if it's not to much problem. I have 0510 and when I hit button for fcc ND boost it says upgrade completed successfully. But when b I reboot I don't get the lights under. When I try to downgrade firmware it gets stuck at 15% verifying md5. I have also tried to install 0510 and downgrade after that, but with no luck. Pse help