It fixed the MMS on T-Mobile USA (they broke MMS functionality with the previous Access Point update). Internet Sharing still broken.
Unlocked Rogers Lumia 920 on T-Mobile USA.
Apparently you can now have up to 8 guests on Internet Sharing, before it was 5. Select the AT&T LTE 1 option. Previously, internet sharing would be broken if any settings within access point was used, Internet Sharing works fine now.
I want to download this to use for MMS on straight talk (for some reason MMS isn't working via WP8 cellular settings), but last time I tried this, it fubar'd my cellular connectivity and speeds, and it couldn't be uninstalled; due to this, I'm staying clear...