If you create a TRX account on the device, it will automatically register your device under that account.
Note: If you already created an account on TRX trailhead website then there is no need to create a new one. In this case just sign in with your existing account and password and it will register the device automatically.
A. Creating a TRX account on the device and register your device.
1. Connect your device to WiFi.
2. Open up the TRX7 software then from your dashboard select Settings>Account Profile.
3. Select Create account. Fill out the account profile criteria then select create account.
4. If you receive an error stating account already exist or invalid credentials. Go to: https://www.magellangps.com/customer/account/forgotpassword/ in order to receive a link via email to reset your password. Once you reset your password you should then be able to login on your device with your existing account.