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,

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