Hi AHChris,
to downgrade the firmware is an easy thing: just copy the kaos-file of the 2.2.1 firmware release to your USB stick (to folder "OS update") and than put it into its dedicated slot. Your KPA will show you, that there is an update available ... and so on. Here this procedure didn't change anything. I think it's a driver problem, like I did show you in my last post .
with kind regards, Torsten
Yeah I tried it yesterday... sadly no change.
I guess we have to wait for a bugfix
Eagerly awaiting the Mac version