5.1 carrier file problem
I downloaded the 5.1 carrier file about a week or before mms was released to everyone. After 5.1 i had mms but it didn't work till the next day. After installing it on my phone i still had the option to tether (from a previous hack that enabled tethering) now i have fully working mms as well as tethering but when i plug into itunes and hit update, it shows me i have a carrier file update. If i install that update will my tethering be gone? Also if i use tethering now will att charge me for it since tether should be right around the corner? Thank you for any help.