Hi Kunix,
I have a Nuvi 1390 and I'm trying use GarminCure3 to restore software on it (it starts with whitescreen, goes to Garmi logo for a few seconds, turns display off and back to Garmin screen and so on). I tried GarminCure3 with different firmware versions: nuvi13xxand14xxseries_GCDFile__570.gcd, nuvi13xxand14xxseries_GCDFile__580.gcd and nuvi13xxand14xxseries_regionfileonly__410.gcd.
I load one of these files into GC3, select CURE and it creates say 097201000570.rgn file, than I start updater.
I put GPS in load mode with a piece of rubber pressing on screen left top corner, hold in place by a clip and turn Nuvi on. It starts with a blank white screen. Updater finds Nuvi on USB port and starts 3 stages of update.
First phase is short (2 -3 seconds ) after which Nuvi screen changes to Garmin logo with "Missing software " message.
If I leave it, Updater gives an error message. I depress Nuvi Power button and it goes back to white screen. Updater continues through two longer erase and update processes and finishes with pop up window "The update was successful"
After this I have the same restarting Nuvi.
If I try run Garmin Webupdater it gives a message that update file is corrupted.
I can see Garmin Device in Windows (XP SP3) Device Manager while screen is blank and it dissapears from Device Manager when Nuvi goes to Garmin screen. I could never see Nuvi drive/folders in My Computer during these processes.
Please help me, let me know what I'm doing wrong and what exact steps I should follow.
Thanks a lot,
Florin