You can flash the firmware directly from a Linux computer using our flash tool found here: https://forum.loverpi.com/discussion/740/howto-update-flash-re-flash-la-frite-firmware-from-another-linux-computer For manual flashing with a USB key on a working La Frite, please do the following: 1) Download the firmware file (.bin) and update script (.scr). 2) Insert USB drive or card reader that is formatted as FAT32 or EXT2/3/4. 3) Copy the firmware file and update script to the device. 4) Rename the .scr file to "boot.scr" without quotes. 5) Eject the drive from your computer and plug it into La Frite. 6) Power on La Frite and it will start updating the firmware. 7) Do not power off La Frite until the firmware update is complete! This will not overwrite the firmware if the firmware is the same so it is safe to run multiple times. For any issues, please go to https://forum.loverpi.com/categories/libre-computer-aml-s805x-ac