Question about Garmin StreetPilot c550 GPS Receiver

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How do I clear CMOS?

I bought a locked c500 from a pawn shop and cant unlock it. Noticed several test spots on main board such as uart in, uart out. Can I clear it from the mainboard? I know the factory can but i'd like to. Anyone familliar with these?

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  • Aphex Jan 03, 2008

    This is correct. I ended up using it as parts to repair another unit.

    Thank you for your help.

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There are only two ways to unlock the unit - The PIN or the location at which it was set. Other than that, it has to be sent back to Garmin. If you have taken the unit apart in an attempt to unlock it, only a tech from Garmin will likely be able to answer your question.

Posted on Jan 03, 2008

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Posted on Jan 02, 2017

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1 Answer

Im trying to unlock a samsung gts3370b phone.its on phone lock and i brawt it from a pawn shop and cant get refund.can u tell me how to take off the phone lock.cant do anything else but sos


himay i know how is your phone is locked. whether its network locked or security locked. if its security locked you need to reset your phone which can be done through softwares. else if your phone is network locked you can unlock it using codes. you can get the codes either from your service provider or from other online providers like Wickedunlock.com

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HELLO I JUST BOUGHT A GARMIN NUVI 350 FROM A PAWN SHOP AND IT'S LOCK HOW DO I UNLOCK THE UNIT PLEASE LET ME KNOW THANKS


Garmin Lock works by using either a 4 digit pin code or by taking the unit back to a preset security location. Although Garmin warn that this should NOT be the user's home address, that's what it normally is. If you know where the last owner lived then you can try going to that location to see if it unlocks, but if you knew that piece of information you could just ask the last owner...

It came from a pawn shop though, so it's very unlikely that you know who the last owner was or where he/she lived.

There is no other way to unlock your unit without sending the unit back to Garmin. There's a charge for the service and you'll be asked to provide evidence that you own the unit; in practice it's going to be cheaper to buy a similar brand new Garmin model. All I can suggest is that you try to get a refund from the pawn shop (unlikely!) or sell it to another unsuspecting person.

Sorry, but Garmin Lock is deliberately difficult to overcome otherwise it wouldn't be much use as an anti-theft deterrent.

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Bought a garmin 760 gps on e-bay seller was a pawn shop and unit requires a pin numer to use unit. How do I clear old pin number and install a new one?


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.

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Same thing happened to me. After one minute of running, lamp shuts off and 5 power led blinks and 3 ready led blinks, indicate UART ballast error. Well, I purchased a new lamp, and installed it, and the problem was gone. I looked closely at my old lamp, and it showed a little blister inside, and a tiny spot of white residue, perhaps it was the whole problem there, although I don

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Garmin c550 unlock pin#


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.

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1 Answer

Watch battery


The CMOS battery, is a unque item inside, usually in a trapdoor-like hatch near the battery cubby, remove the main battery before looking for it. It usually is covered in colored shrink wrap, it also can be several coin- sized batteries and a wire connects this to the motherboard.

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