Tailor your TRMNL

1 Upload images

Upload splash and loader images (max 800×480 pixels).

2 Generate binary

Click the 'Generate Binary' button.

3 Plug in your device

Use a USB-C cable to connect your TRMNL to your computer.

4 Enter 'Flashing mode'

1. Turn off the device by flipping the power switch to 'OFF'
2. While pressing down on the circular button, flip the power switch to 'ON'
3. Let go of the circular button

5 Flash firmware

1. Click the 'Connect' button above
2. Select 'USB JTAG/serial...' from the list
3. Select 'Install' from the popup menu and confirm
4. Wait for the device to write brand binary (this may take up to a minute)
5. You should see a confirmation message within the popup menu

6 Restart your device

1. Turn the device off by flipping the power switch to 'OFF'
2. Wait approximately 15 seconds
3. Flip the power switch to 'ON'