I guess you mean the report in the update.log file was as before (Parsing "xrgn,41 ...") only. Otherwise what was the exact log entry?

Not that it matters much. Region 41 can't be erased and it can't be overwritten so we can't even write an empty 4.00 MB (4,194,304 bytes) of all FFs BIN file to it. The device won't be able to write it either, even if it wasn't bootlooping (it should update it by re-creating the data as part of every normal boot-cycle).

I'm thinking you're out of options for a software fix and this is strongly indicative of physical flash damage.

It's not a complete loss tho'. Strip it for parts. The screen, front bezel and the battery (if holding charge) sold separately on ebay if you're lucky might bring you almost as much as a working device anyway. Cheers.