TRX7 Device Troubleshooting. ← Knowledge Base Why won't my TRX7 power back on? Update Your TRX7 Operating System (OS). Assemble the TRX7 AC Adapter and Plug. Can I plug my TRX7 into my vehicle's head unit? "Authenticating" Wi-Fi Error Fix. Can I perform a factory reset on my TRX7? Why is my map update "skipping"? Undo A Factory Reset. Reinstall Maps after a Factory Reset.