jataricart/various_flashers/readme.md

Please put those file on disk, or on atr file or simply copy and run from sio2sd or another device which allows running executables. Run flasher WITH BASIC enabled (there is a need to run with MEMTOP set as $A000) When program says:

Insert Cartridge

put the cartridge into cart slot gently.

When all is ok, the menu will appear:

Press:
START  - format cart and programm
SELECT - verify; repair bad blocks.
OPTION - verify only

Choose your option (START will be good)