Have you tried using DJI assistance to check and update the firmware
You can refresh the firmware, upgrade and downgrade using this procedure
I know I have written this for the MIni 2 but it should work for the Air2s, worth a try
This is the latest link to DJI assistance
https://dl.djicdn.com/downloads/dji_assistant/20220124/DJI+Assistant+2(Consumer+Drones+Series)+2.1.9.exe
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