So far, this update has fixed my Prophet XL that has been locking up while running OS 2.2.0. Also, after lockup (prior to 2.2.1) my XL would not bootup after a power cycle. It would get to 100% sample load and then freeze.
If I came back after an hour or so, I could reboot it after a freeze. I then put on 2.2.1. and so far it seems to be working OK. I am loaded down with user samples from Shaw and GeoSynth, so I thought maybe I had that SSD issue people were describing back a couple of years ago.
Note: I did receive an error on my screen on the first reboot after upgrading to 2.2.1.
Error stated was>> Cannot reach audio processor, M:2.2.1, DSP:0.0.0.0.0, FPGA:0,0
After a big gulp, I rebooted a 2nd time and so far it has been loading the OS without an issue. No lockups so far. Fingers crossed.
Thanks SEQUENTIAL!