Even if your device is bricked (stuck on a loop), you can still install this fix. Do not rely on Over-the-Air (Wi-Fi) updates if you have the 4NSF error—use a computer.
: Resolved issues where users encountered the message "This function can only be used in the vehicle in which the device was first installed". garmin 4nsf update fixed
As of November 2024, user reports confirm that version 20.10 has held steady with no recurrence of the 4NSF error. Even if your device is bricked (stuck on
Menu → System → About → Software Version. If you have the original 4NSF (build ending in .4NSF with no “fixed” note), update immediately. As of November 2024, user reports confirm that version 20
Are you currently using the on a computer?
: A persistent bug where music playback was too quiet or dropped out during navigation commands has been improved. Memory Management