I am using A1 firmware 01.05.00.00
And AMS Lite firmware 00.00.07.94
and haven’t had any problems with printing or machine issues since rolling back,
I rolled back live, not via memory card, I have been printing live also, not going thru my LAN. I also am running Bambu Studio ver 2.2.1.60 without any modifications to setup, running on an Apple MacAir, vintage modle.