Mfr date when flashing 32123S to XSU1

I read a post that if my 32123S was manufactured prior to March 2002 that the flash to XSU1 might not work. Mine was made December 2001. Could this be the problem?

Mine was manufactured exactly on the same date and i have no problems at all. Still didn’t burn @ 40x cause i don’t have proper media to do it. Did a test burn with some 32x media but it came out with some errors, but i blame it on the media!