Not sure why...Help
My problem was cured by reformatting the Mini SD card that holds the map data. I had the same problem this week with my Garmin Nuvi 265. After doing an update I received the "No Data Available" message when trying to use my GPS. After trying three days of so-called fixes I remembered that, at least in my case, the map is stored on a Mini SD card. I pulled the card from my Nuvi and popped it into the computer to see what's on there. There are 4 or 5 files associated with the map. I deleted the files and reformatted the Mini SD card using the FAT32 setting. I reinistalled the card into my GPS. Prior to connecting the GPS to my PC, I uploaded the latest version of Garmin Express. Once that was loaded I reconnected the GPS and had to re-register the unit. Once that was done the software told me that there was a new update. I ran the update. Lo and behold . . . after about 25 minutes the map was successfully loaded to my Nuvi and it was working as it should.
Update failed or was corrupt or memory failed or wiped just reconnect to pc an let it update again
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