Revert to previous OS?
I have a 2015 MBP running macOS Big Sur 11.6. Is it possible to revert back to an older OS, such as Catalina 10.15? I have an expensive Fujitsu high speed scanner (32 bit) that I would rather not throw away. It's a fabulous scanner and I recently learned that Fujitsu possibly has an updated 64 bit driver that they made available in 2020 that will work on Catalina. I'm still looking for that driver and hopefully, more recent drivers from Fujitsu so I may continue to use my $400 Scansnap S1500M.
My other option is to buy a new scanner for $325. Which leads to another question: Is it unreasonable to be angry at Fujitsu for not continuing support for scanners so they can work on 64 bit computers? I do realize, my scanner is well over 10 years old, but it's performed flawlessly and wonderfully all these years and doesn't show any sign of failing now.
I also have a 2021 MBP running macOSMonterey 12.1
MacBook Pro 14″, macOS 12.0