Today DJI have released Firmware version 1.7 for the A3,N3 and A3 Pro flight controllers, this is shortly after DJI pulled 1.6 update earlier in January after it was found there was a critical bug when restoring the fw.
V1.7 includes the following updates for the A3 Series
Added support for version matching between DJI Assistant 2 and flight control system.
Optimized the DJI Assistant 2 backup and recovery functionality.
Optimized SDK activation and version matching.
Optimized mobile SDK and onboard SDK communication logic.