The mists are now clearing a bit. These's no problem to get a CN firmware version for HWID 1722, it's available here:
Code:
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The problem is that Asian devices are usually updated a little differently than Western ones and it seems maybe GarminExpress has got confused then loaded a firmware not quite compatible with your device. You seem to have had a tendency towards loading unknown files that you 'found somewhere' too, best rethink that.
This is what I would do, but it's all completely at your sole risk of course. I'd open that Chinese GCD from the above link in RGN_Tool then save an RGN file as 172201000410.rgn (no other naming is safe). Open that RGN in Updater.exe and put the device into preboot as I detailed in post no. 6, then flash it.
If you can't access pre-boot, try to update it the way it's usually meant to be done. That's with a software called 'Garmin Updater' which is specifically for Asian devices. You'll first need to start a program 'Launcher.exe' which in turn downloads and invokes the updater program. Just follow the prompts in the program if you wish to try that. Available here:
Code:
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Potential problem with the second suggestion is that I have no idea if it will work when the device is unable to access Mass Storage Mode.
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