Are you sure you are reading it right? I think maybe it's Resources instead of Restore.
I did the update on PA900 with no problem, but I did not do the new Resources.
Tony did both and it seems to have moved some styles around to different locations. Maybe it has some new ones.
I didn't do the Resources update because I had edited a number of factory styles and added some of my own to factory locations, and I would have lost all that and had to reload them. Didn't want to take the chance as I was really busy working at the time.
The primary reason I wanted the update was that it restored the fingered 3 mode, that had been left off the original OS.