Thread: Oregon 650 flashed with Oregon 750 firmware is BRICKED

Hello all,

1) Bricked device MODEL, Firmware version, HWID.
Garmin Oregon 650, firmware version 5.6, HWID 1651.

2) Why and how the device got bricked.
Accidentally flashed the Oregon 750 recovery firmware posted on one of the forums (I post it here).

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

4) Does your pc sees your device?
Updater finds it (preboot) and shows its Oregon 750t (Unit ID 0).Windows shown in the device manager but not as a Mass Storage.

5) List all the procedures you already tried to unbrick it and their results and errors messages obtained.
I flashed both the original Oregon 650 firmware and the ones made by GarminCure3. Updater.exe writes successfully, but after the firmware does not load, and does not switch to mass storage mode. The screen freezes on the Garmin screensaver or blinks white. When reconnecting Updater.exe again defines as Oregon 750t (Unit ID 0).

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
ID: 0, UNIT ID: 0; USB Comm via Bulk Pipe.

8) Write down if you already read or tried GarminCure3 tool - the new way to create cure firmwares for Garmin devices.
Yes.

9) Can you reach preboot mode? Yes, by pressing power button. It stays in preboot while I press the button.

10) Probably no , but do you have NV backup?
I have a backup of the internal memory.

Many thanks.

Spoiler: images

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