I must open a thread, sh*t just got serious. Driver must go on a road tomorrow morning. I got a nuvi 1340T, probably 2 or 3 years old. So far it has been working fine, not tinkered with nothing. Exactly a month ago I updated it to latest map available City Navigator Europe NT 2016.10 on 8gb microsd card because internal mem don't have enough space for that map. Internal memory remained the same, I only removed the old map, sqlite file and the old jcv. Also updated it to latest firmware available ver 6.30. Everything has been working fine, routing, etc etc. Yesterday my truck driver brought it as dead, bootlooping on garmin logo. With or without sd card same bootloop. On pc it's not recognized.

Tried with GarminCure3, first 6.30 cure3 fw. Nothing. It enters pre-boot mode, starts flashing cure3 fw, and stops at Erasing (this may take few minutes), and throws error The garmin device is unable to program the requested memory region. No mass storage mode after that, and device constantly loops through garmin logo when still attached to usb cable.

Tried with QuickCure3, id 972 630. Command runs successfully, and device enters mass storage mode. Deleting small files works, on large it hangs for a few minutes and then drops connection and device is disconnected. When I runs QuickCure3 again, file system is untouched. Everything is completely same. Windows format doens't work (hangs for e few minutes, and throws unable to format). Tried RMPREPUSB, runs fine but device is not formatted at all.

Any help or memory chip is beyond repair?