You can see how simple it is to Disable Geofencing on Lowrance Chartplotters, and how it is done by entering the Unlock code given to you. You will receive a fully working, neverlocked, Lowrance Chartplotter, without any fear of updating firmware. Your device will always stay unlocked. The feet can now turn to meters, fahrenheit to celsius, And a warning Device is not valid in this area will dissapear.
Unlocking geofence on Lowrance Devices are permanent and will turn your device in ROW (rest of the world) version. It is done once and any further firmware updates are okay
If You are experiencing a sign “Unit not valid for use in this area” Geofence unlock fix this issue