The HW revision is about muxing settings, mostly.
You can safely flash the other 2 parts: initfs and rootf.

Only in few iterations the bootloader had major changes that required reflashing it.

Flasher version might be an issue as well, but it's worth trying.

If nothing else, this experiment should not be destructive and you should be able to safely revert to what you are running now, should the attempt fail.

But hopefully you won't have to.