Nest thermostat is locked

[Margarita1]

My nest thermostat is locked and I dont have a pin number. I have the nest application, however, this specific thermostat is not registered in the nest application. Another of our  nest thermostats under a different address is registered in the nest application. Please I need help.  What can I do to unlock ? How can I add the locked thermostat to the nest application, if there is  already another thermostat with a different address ? Thanks!

[David_K]

If you can't control it using the app anymore, you'll need to reset it using a computer.

1. Connect the Nest Thermostat display via USB to a computer.
   
   
2. Verify that the Nest Thermostat mounts (appears as an attached drive icon).

• If the Nest drive will not mount: Restart the thermostat and the computer.
• If the Nest drive still won't mount: Connect another device to the cable to see if it appears as an installed device.
• If it doesn't appear, use a different cable/port/computer.

If the Nest drive is successfully showing up on your computer, can you see a technicalinfo.PLIST file? If you get this far let me know and I'll ask a community specialist to assist with next steps, as these can't be shared publicly in the community.