I am fairly certain that I read that it did and even applied it myself.
Got old timers disease, can't remember squat, but that is my story and I am sticking to it. and it worked too!
Of course the usual applies, make the nandroid and wipe wipe wipedy wipe, but it was quick and painless for me, think it was just flash the zip.
Radios were a different story, had to be in amon ra to start with, have a well charged battery and do not pull it during the process. The process happened really fast, it rebooted itself once but left text on the bottom of the screen about wiping caches, but the new screen and controls were written on top so you could return or reboot. Lots of folk missed that and waited for extended periods of time for the caches to finish wiping.
That was fairly dramatic.