Thread: IMPORTANT! If you want HELP in case of a bricked Garmin device, please follow this

No there's no need to write the HWID into the RGN file and your naming of it is correct for safe flashing.

Hello all, I have a garmin 920xt that got bricked some time ago during a firmware update through garmin express (I think the craddle's usb cable was not in a very good condition and stopped working half way).

1) Bricked device MODEL, Firmware version, HWID.
Garmin 920XT, I don't remember the exact firmware version. I tried g7towin to get the HWID but even in preboot mode a get USB Error: WaitComplete: Error waiting for ERROR_IO_Pending

2) Why and how the device got bricked.
Updating firmware through Garmin express and getting disconnected half way through it

3) Symptoms: what's wrong in your device?
It stays in the logo screen forever

4) Does your pc sees your device ?
If I press the upper arrow button then it's shown in the device manager but not as a Mass Storage. Updater finds it (preboot) and even shows its ID.

5) List all the procedures you already tried to unbrick it and their results and errors messages obtained.
Downloaded the latest firmware 9.90 from garmin and tried the GarminCure3 tool to create a cure. The tool fails with an exception: XRgn::DetectHWIDandSWVER(): ramloader has invalid format

6) Do you have Garmin USB Drivers installed ? Yes, the 2.3.12 version

7) If you don't know HWID get it by Use program G7ToWin to retrieve your HWID
It doesn't find the gps

8) Write down if you already read or tried GarminCure3 tool - the new way to create cure firmwares for Garmin devices
The tool fails with an exception: XRgn::DetectHWIDandSWVER(): ramloader has invalid format. Also tried the QuickCure3.rgn file with updater but it wasn't compatible with my device.

9) Can you reach preboot mode? Yes, by pressing the upper arrow button (on the top right) and putting the device in the craddle holding it. It stays in preboot while I press the button.

10) Probably no , but do you have NV backup? No.

Many thanks