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

@Cnfhbr Clear, thank you. Is there any chance to upload original .gcd firmware in pre-boot state?

Edit:
@Cnfhbr Obvious question in this case - why Garmin's WebUpdater cannot flush .gcd encrypted by Garmin however device is detected by tool?
Same for Garmin Express. So manufacturer can deliver non-properly tested firmware and brick devices, but does not provide tools for recovery...

Spoiler: pic 1

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Those "instructions" does not make sense. If GARMIN folder would be available after deadly 16.60 firmware update I wouldn't bother people at forums and immediately reverted it back.
Also I've tried drag-and-drop of GUPDATE.GCD into WebUpdater from System_1630 folder. The same error:

Spoiler: pic 2

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So GARMIN's tools cannot flash their own devices even if they are detected by OS ("GARMIN USB GPS"). But obviously there is a way to flash memory in that state (RGN Tool as example). Poor design decision from software engineering point of view.

In your case, you should contact Garmin's technical support, I guess.

I've already done that, no response at the moment...

Can only thank you to people responding here.