TRMNL OG Game Boy

Pictures of it running · Source on GitHub

Connect the TRMNL OG with a USB cable.

1. Firmware

Warning: flashing replaces the firmware that is on the TRMNL now, with its WiFi and account settings. The device stops being a TRMNL display until you put that firmware back. Save a backup first (below) so you can restore it. At your own risk: this is not an official TRMNL firmware.

Local file instead (gameboy-merged.bin):

2. Game ROM file (.gb), a game you own:

Save states the battery save and the automatic save states (every 2 minutes), kept on the device Saves file to put back:

Backup the whole device (4 MB: firmware, game, save, or the firmware you had before you replace it) Backup file to put back:

3. Device log what the firmware prints (controller, speed, memory)

The ROM never leaves your computer: it goes from this page straight to the device. The save game on the device stays when you flash the firmware or upload a ROM.