If you're rocking a native TRMNL device (not BYOD, not Virtual), you can unlink it in 1 click. Then you need to perform a 'soft reset' on the device itself.
Here's how.
Step 1 - Visit the device settings
Inside TRMNL, hover the top-right dropdown and click the gear icon beside the native device you want to unpair.
Scroll down to the Unlink Device section and click "Unlink."
After confirming the scary confirmation box you should see a success message:
Step 2 - Soft reset the device
Now that the web application has said farewell, we need to instruct your physical device to consider itself reborn.
TRMNL OG
TRMNL OG
Assuming your TRMNL is already on, hold the button on the back for 5-7 seconds, then let go. This should re-enter WiFi pairing mode:
TRMNL X
TRMNL X
Pres the left and right side of the touchbar for ~1 second, letting go when the screen flashes to enter WiFi pairing mode. You will confirm be holding in the center of the touchbar.
Next, connect to the WiFi network named TRMNL as the screen suggests. You can do this on a phone or computer.
But wait! Don't choose a WiFi network. We're resetting it aren't we?
Ignore the network list at the top, and tap the "Soft Reset" button near the bottom. If you don't see this button, tap "Advanced" and then "Soft Reset" on the next page.
Tap "yes" when it asks you to confirm.
Step 3 - Turning the Device Off
TRMNL OG
TRMNL OG
Within a few seconds, your TRMNL should re-enter WiFi pairing mode for a 2nd time. But this time, it will be as if it's a brand new device.
You can now turn the device OFF with the slider on the back (slide it down).
TRMNL X
TRMNL X
Within a few seconds, your TRMNL will display the WiFi pairing screen again:
To turn off the device, repeat the touchbar press on the left and right sides, holding for ~1 second, letting go when it starts flashing. You will see a confirmation screen:
Hold the middle of the touch bar to confirm, letting it go when it starts flashing.
You may see a Flashing Modem Firmware... screen for ~1 minute:
After that completes it will show the Welcome screen:
Step 4 - You're done!
Your previous user connection, API key, Friendly ID (6 digit code), mirroring settings, name, refresh rate, sleep settings, and so on, will all be cleared.
You may now set up this device like usual, or turn it off and give it to someone else.