Question about Garmin StreetPilot c510 Deluxe GPS Receiver
Unfortunately, even if you perform master reset on Garmin GPS unit, it does not reset Garmin Lock security feature, which password-protect most Garmin electronic devices to deter theft. If you forget the PIN or password unlock code to unlock the Garmin unit, the best solution is to bring it to Garmin to get unlocked. “Secure Location” does not unlock a locked Garmin unit either as it’s only a temporary fix as when it’s turn on outside the security location, the device is locked again."
So unfortunately, there is only one option: You have to send your nüvi into the Garmin, who can unlock it. Remember original receipt.
Posted on Sep 20, 2009
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Posted on Jan 02, 2017
SOURCE: Garmin c510 error message
You're unit is probably missing the gmapprom.img file (failed update maybe?).
Try contacting Garmin - if you've got registered maps they may send you another copy (although big file - 100+MB)
Posted on Jan 03, 2010
SOURCE: garmin streetpilot c510
You cannot unlock (or "reset") a locked unit without the PIN number or going to the location where the PIN was set. The only other option you have is to send the unit to Garmin.
Posted on Jan 21, 2008
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