Hello & Welcome to Just Answer,
Sorry to hear of any issue you may be having with your device.
To upgrade your device software and maps, you should be able to get a program on your computer - called Garmin Express - that will do the job for you.
NOTE: You will also want to have HIGH SPEED INTERNET ACCESS, and perhaps an SD/microSD card (IF the maps have grown large enough to exceed the internal memory of the device).
You should be able to get Garmin Express from the following link. There is should be a video on that page to show how to get started with the program, but the BASICS are to download, install, and run that program, THEN connect the device to the computer (via USB cable), and ADD it to the program (see video).
Once ADDED, you will have the opportunity to UPDATE the device software (at no cost) AND the program will offer any map updates that are available for the device. NOTE: There MAY be a cost to update the maps - if the device does NOT have "Lifetime Map" updates for that region.
Please give that a try and let me know what you find, or if you have any more questions.
And when you are ready, please take a moment to rate MY service level (5-star is my goal) so that I get credit for my time helping you today.
You should see some "stars" (and SUBMIT button) to do that, but please let me know if you do NOT see them (you may have REFRESH your screen) or can not use them.
Thanks, ***** *****