Is there a way to downgrade firmware without using the Bambu Handy app? I’m currently on 01.07.00.00 but want to revert to 01.06.01.02 to try the Adaptive Meshing and Purging (Adaptive Meshing and Priming (KAMP) G-Code by Ichisaur - MakerWorld) to save a little on print time.
The good news is that firmware you have installed has the ability to load firmware via the SD card. The bad news is that the only available firmware to load is that version. Previous versions have not been offered.