Striso board bootloader v1.1.2
UF2 bootloader for the Striso board.
Plug in the Striso board with the square button pressed to start in bootloader mode. A USB drive will appear. The current bootloader version can be found in the file INFO_UF2.TXT.
Copy the new .uf2 file to the drive to update. After updating the bootloader the firmware must be reinstalled.