I am trying to unlock and reset the security code on my Garmin nuvi 660.Can you guide me through the steps?
The first thing you have to do is enter the correct PIN or take the unit to the location at which the PIN was set. It will now unlock. You can then press the icon that looks like a wrench, and look for an icon that says Garmin Lock (it is in different places on the different units, and I forgot exactly where it is on the 660, sorry.) You can then change the security code from there. If you are trying to unlock the unit without the PIN number, you will be unable to do so without taking the unit to the security location. In that case, your only option is to send the unit to Garmin.
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