Flash LG 8160B with 8161B firmware?

As you may or may not know, in order to backup Nintendo Wii games an LG 8161 thru 8164 model DVD-ROM drive is needed because of special debug commands that can be used. I currently have an old LG GDR-8160B drive and I was wondering if I could flash the drive with 8161 firmware? From what I’ve read the 8160 and 8161 are very similar drives. Is it possible this could work, or would I just kill the drive by trying this? Thank you for any help in advance,
Chris

Very similar is never enough, really.
You can try, but you’ll have an dead drive then.