Thread: n�vi 1490 LM - from boot looped to dead? - case slosed

I got a Garmin n�vi 1490LM with a boot loop. No idea what happened to it to get into that state.

I installed the Garmin USB drivers, was able to put the device in pre-boot mode.

I checked with "g7towin", I have HW-version 972.

I downloaded the "nuvi13xxand14xxseries_GCDFile__630.gcd", converted it in GarminCure3 to Cure, send my device to pre-boot mode and flashed it via Updater (the n�vi shortly display "LOADER LOADING" and then "SOFTWARE LOADING").
The "Erasing..." step of flashing the firmware ended with the n�vi restarting and "boot looping" again.

I also tried QuickCure, wich finished successfully, but the loop loop was still there and no MSM.

I stumbled upon this thread: [Only registered and activated users can see links. ], dumping NV (Ldr.bin & update.txt in folder Garmin\Updater\0972\), which was creating files on the SD card. see attached XXX

Butters suggested in post #14 to manipulate (replace first occurance of "0C 80 A0 E1" by "0C 80 A0 E3") the extraced boot.bin from "nuvi13xxand14xxseries_GCDFile__630.gcd" and flash it while SD card only contains Garmin\Updater\0972\update.txt

That lead to a short green chart on the n�vi device. I restarted an the chart got bigger. At one step I was asked about the maps I guess.
Finally the storage even was shown in Windows, so I guess this was the MSM.

I decided to update via Garmin Express, which found the n�vi and ran a small software update, which did not finish as the device got "lost" again in Windows.

Since then I am not able to turn the device on anymore, neiter by power button nor by plugging in the USB cable attached to my PC.

I tried different USB ports and cables, but that is not the issue as posts and cable are working with another non Garmin device and fine before.

Is there anything I can do to revive the n�vi?

Thanks

Originally Posted by gagatt

I downloaded the "nuvi13xxand14xxseries_GCDFile__630.gcd", converted it in GarminCure3 to Cure, send my device to pre-boot mode and flashed it via Updater (the n�vi shortly display "LOADER LOADING" and then "SOFTWARE LOADING").
The "Erasing..." step of flashing the firmware ended with the n�vi restarting and "boot looping" again.

of course it won't boot after cure firmware, the right steps are:

1.Flash cure firmware with Updater
2. Format the unit using RMPrepUSB:
Use following settings:
- Set 1. Partition Size (MiB) to �MAX�.
- Set 2. Volume Label to �GARMIN�.
- Set 3. Bootloader Options to �MS-DOS bootable (IO.SYS) (CC3 and CC4DOSUFD)�
- Set 4. Filesystem and Overrides to �FAT32� and �Boot as FDD (A: no MBR)�.
- Set 5. Untick (uncheck) �Copy OS files from here after formatting (if box is ticked)� and untick (uncheck) �BartPE -> Drive�.
- Click 6. �Prepare Drive�
[Only registered and activated users can see links. ]

3. Flash ORIGINAL firmware into the unit, using GarminCure3 and Updater.exe.
- Follow the same procedure as in paragraph 1, but now select �ORIGINAL� instead of �CURE�: