20 Most Recent Cobra GPSM 7700 Car GPS Receiver Questions & Answers

Their software HomeBase is compatible with all Cobra truck navigation models EXCEPT the model 7700. If you have a 7700 then do not use HomeBase, otherwise you will render your unit inoperable. If you own a 7700 then please call Customer Service at 773-889-3087 for update options.

Most SD cards have a writing protection physical switch on them. Have you checked it? If the SD card is full, depending on your device, you should be able to buy and use one with more space

Did you get any software shipped to you with this unit?

Please visit the link below:
https://www.cobra.com/downloads/Nav7700hints.pdf
This will open a PDF document in which you shall find the solution for all the difficulties you are having regarding your GPS device.
This shall help.

The Cobra update server is under maintenance,you will have to try it later or maybe tomorrow .
To update the software in your 7700 PRO, please click on the following link(after 48 hours):
http://downloads.cobra.com/MobileNav/Nav7700/7700.htm

no when u update it is only the firmware the electronics will still be the same so it wont work with the 7750 firmware srry

can not update my cobra gpsm 3000

This website tells you how.
http://downloads.cobra.com/MobileNav/Nav7700/7700.htm

call the cobra customer service at 1-773-889-3087
give them the serial number from your unit and they should mail you a disc that you run on your laptop to reprogram/update your gps, and there should be no charge. so until then your s.o.l

check the manual to see if it tells you how to unlock it if that dont help you check with the place you bought it or look up the manufacter you made it and try and get it unlocked by them hope this helps you.