Hi All!
I only hope that somebody can help me with my problem described below.
I have GarminNuvi 3790T ( preinstalled City NavogatorEurope 2011.20 )
1) I added some new POI to the device ( not to SD card)
2) I decided to update my 3790T to the latest software version (3.90). I was already on 3.60 and have never had any issues with updating the firmware on any of my previous Garmins. I connected via webupdater, it found the update and downloaded it. Then I disconnected my 3790T and restarted it manually because it didnot restarted automatically. It found the software and began to update it and then it just hung and sat there. I let it sit for a while with just "LOADING MAPS..." on the screen. I then rebooted the 3790T (by holding down the power button) and now when it comes up it says this: "Loadind Maps..." and hangs. My windows 7 PC does not see it now. When I flashed it with Updater to CURE software 2.50. I received this message on screen : --- GIR Version Mismatch --- GIR Checksums: 0x119a010 , next line: 0xe79e5f0 System Expected Checksums: 0x53008d0 Update your unit software by visiting [Only registered and activated users can see links. ]
But with this software myGarmin Nuvi 3790T is visible by PC ( as mass storage device)
I deleted all IMG, gpx, gpi and then flashed it with normal software 2.50 ( not CURE) and the same screen appears : "LOADING MAPS" and hangs...
Any ideas on how I can possibly fix this on my own? Thanks a lot !
Best regards

Do you mean I have to delete gupdate.gcd from folder .System and then to flash again?