Sudden printer stop
Every A1 & A1 mini user (and probably every bambu printer user) has or will have this traumatic experience. Are you close to having one? Let's check. Printer on => settings=> SD Card. There you will find a screen with buttons Format and Eject along with the storage amount & remainder with a bar graph. If that bar graph is approaching full, you'll be experiencing this fail to print soon enough.
2 Solutions: format and destroy the OEM firmware stored on the OEM sd card & all print gcodes, or, remove thru eject sequence and attach to a computer. From here, open in a file management app and move any gcode & the OEM firmware files you want into the computer or other storage. device. Properly remove the card from the computer and re-insert into the printer. Now, select format. Plenty of storage room now.
Edit: I should add when not to remove nor format the card. Do not attempt to properly remove or clean or format the card while printing. Effecting the card during printing will end the print in bad ways, similar to removing a card from any devise during it's use.
The printer does need to be turned on to access the card's storage amounts and the eject & format options.
The card can be removed and inserted while printer is turned off.