I also keep two backups just in case.Make sure to report if it's working, I'd like a confirmation, I got it working on my 3 real MCs as well as both the US and JAP ninmem raw files and of course my back ups, wow so many backups I keep!
Served me well, when I updated for like 20 revisions in hiatus, I got a corrupted memory card (I think it was around the time Triforce games got saves working) and goddamn I was lucky I had a backup of the ninmem.raw in my PC. I would have cried otherwise.