I think the build is basically stable. It has not slowed down the phone at all. The photos are messy but that does not detract from the performance of the phone itself or texting or web usage. I think what bothers me is that this even happened. Now every time an update screen pops up I will have to wonder if its the real thing or another mistake. There are improvements - the gallery is nicer, the auto-wifi is nice, Google now is nice and I would use it if I had an actual life, and there are undoubtedly things I have not run across yet in my travels. The functions all work. So it did not brick the phone by a long shot. I am just hoping it does not keep me from getting the actual real update when it comes out. At least in a SOAK test, you know you are a guinea pig and you are expecting the update. Those of us who got it were blindsided by this update and then we find out it was a boo boo. Well not much we can do now...it is there. It works. I will live lol. I hope the others who also got this are faring as well. I did do a cache clear right after the update.