Well, both mtd1ro_orig and mtd6ro_orig look the same as those in the R0 series (DS-2CD2x32) cameras.
And on that basis, if the camera had been a DS-2CD2032-I (as per the 0598 devType value in mtd6ro) I'd say that the file is OK, no changes required.
The language=01, the devType=0598 and the checksum bytes are correct.
Exactly what firmware did you attempt the upgrade with?
Remind me what you saw after the update - did SADP show anything?
What's clear from your fixup_log.txt file is that the brick-fix 'min-system' recovery environment seems to be working OK.
The fixup.sh script is available, and is able to extract the mtdblocks.
It does look just like a DS-2CD2x32 camera is running.
On the basis that the camera is already bricked and that the min-system environment appears to be running OK, you could take a small risk and do the following:
Make a copy of mtd6ro_orig and rename it as mtd6ro_mod
Download a copy of the R0 5.4.5 firmware from here :
DOWNLOAD PORTAL
Rename it as digicap.dav and place it in the same folder as the mtd6ro_mod file
Proceed with Stage 2 and Stage 3 of the /dav/fixup.sh script
It will already be ready for Stage 2 - you just need to execute it again with :
/dav/fixup.sh
Good luck!