Unfortunately, I doubt it could load a 0827 gupdate.gcd from an SD, even if the HWID isn't screwed up by attempting a flash with MTK 1091 fw.

Quote Originally Posted by pgardella View Post
..............
The Garmin rep had me try the 1091 firmware, but the Updater refused to run because it didn't match the hardware.
He/She/It had you do WHAT?! God save us from blonde service desk droids. How was that fw rgn named? If it was named anything other than 109101000xxx.rgn [where xxx is the fw version] the flash would be forced. If it was named other than conventionally, the flash may have started but then aborted. Maybe your HWID has been overwritten to 1091? If Caty's good advice below doesn't work, try flashing the original 0827 fw in updater.exe named 'out.rgn'. If unsuccessful, try the 0827 cure fw as the same name.

Quote Originally Posted by catymag View Post
Lol fantastic advice flash wrong firmware!
Try to run cure as admin with Windows 7 or try a pc with XP.


Edit:Try also QuickCure3 [Only registered and activated users can see links. ] bottom of the post.