My nextar W3G-01 won't load the map screen any more. One time as I was trying to make it work by flicking back and forth a message stating invalid or missing data file linkinfo.bin came up, but nothing since, and still it won’t open the map for navigations.

If it is running Win CE then it is VERY old. The GPS is probably failing to see the satelites. Probably time to replace it.

http://www.nextar.com/frontend/prodsearch.asp?keyword=PART-GPS-MAP09SDC

I don't believe so.

To update the existing map for your Nextar product, please contact Nextar to find out if any new map information has become available. The products are usually pre-loaded with USA/Canada maps, depending on the model.
OR
Go to Nextar.com and select your model.

I would go to nextar website, and you should be able to download the software back on, on to your gps.

FREE UPDATE MAP FOR MY GPS NEXTAR NGPS3

In the product manual it indicates there is a SD card slot, along with a USB port, so there is a physical method to change the map data to your locale.
http://www.nextar.com/images/Product/W3G-01%20hardware%20manual-english.pdf
However, you should contact the manufacturer to see if their firmware allows you to change/add maps. Garmin GPS units have this capability, and I have used their topo & Road maps together with very good results for off-road adventures out in AZ & Utah.

You'll just need to call Nextar customer support and purchase the updated map then you can install it on your device. There's no free map download, you can only get it from them

Get a blank card, put it in your gps device, connecct to your computer, go to their website and download the maps you need. Mine stores everything inside itself. You might not even need the card. Just load the maps into the gps.

Is there a map update for Nextar GPX model X3-01. If so, please supply link
Thank you.
Peppercorn

How do I update maps in my nextar w3g-01