I followed the instructions to a tee. I then discovered I have a x9310bt instead of a x930bt. I made it to %51, then the update asked for the SD card. I was stuck at the screen asking for a SD card, so I deleted the file mentioned in #20. This got my radio working but nothing else. At least I had a radio for the ride home. I extracted all the files again and tried it all from the beginning. The radio will not go into update mode now. Does someone have a copy of StartKnd.log?
#20: I think you can kick the unit out of upgrade mode by deleting \USER\SYSTEM\Download\StartKnd.log
(a value of 0 in this file means start normally. 1 means upgrade, and there is 2 and 3 - not sure what those do.) I believe if this file is missing or zero inside, it will try to start normally.
Tried 3 different SD cards and downloaded twice. Using 7zip. total package is 241 files.