I had an similar issue. I have an unlocked phone from one carrier being used on a different carrier. Everything was working perfect before, but after the update MMS and Internet Sharing would no longer work. I had to go into Access point, create a new dummy connection, set it as active, remove my old carrier connection, and re-add it. After that everything was working again. Looks like the update overwrites some of the carrier settings, even though in Access point it appears still correct.
01-27-2014 03:55 PM