I bricked an older type (2011) 1135AH. In desperation I put gupdate.gcd on a stick in the Garmin directory from my handheld Garmin. It unbricked it. File is very small 9.107kb. Not sure if it matters but I had a blank Garmin.txt file in the same directory.The navigation get stuck at Garmin Loading... screen and that's all, nothing else happens after hours and days.
Dodge Journey from Argentina.
I've read somewhere that is a full memory problem. But there is no way to flash any firmware any more.
I've tried with different drives, CDs, with different firmwares, 3.15, 4.08, 6.22, and always get de ERROR REFLASHING 0x 31A0 a moment after the flashing loading bar goes off...
Thank you RScottyL