Hopefully it will continue to operate correctly but I have the files saved should I need to do it again.Purchased in March 2016 for $100.00. I used the link provided by Navman in responses to others that had this problem and calibrated the screen successfully. Like others, I had problems with the calibration of the screen after a couple of years and was quite disappointed until I found this review site. You may refer to the link below for instructions:if the link above didn't work the first time, please select your region and access the link again.Hope this helps. If that doesn't help, you might need to recover the device's software using a Windows computer and the NavDesk DVD that came with your Navman. Let us assist you further.Unhappy Armidale is correct (thanks for that), please poke the reset hole located at the back of your GPS and hold the pin down for good 3-5 seconds to reboot your unit. Sorry Andrew I don,t you would be best to email navman tech division or better still ring them Hi AndrewI can't specially tell you about the code, but it could be good to write down the error message in case you have to contact Navman.The first thing I'd suggest is finding the reset button (you will need a paperclip or something that fits into the slot) and then see if it works after being reset.Good luck! I can't help but feel that these models have a built in redundancy.g Hi Andew P,We apologize for the trouble your unit has caused. Otherwise, feel free to contact us.Regards,Navman Support Team.

If this didn't work, we may need to perform software recovery using a Windows computer and your Navman DVD that is included in the package.Instruction can be found here: If it's your first time visiting our FAQ site, please select a region first and then try again.Hope it works.

Navman activation key