Will doing an update remove AWS band
I have an AT&T galaxy s 4 SGH-1337 that i'm using on the t-mobile network.
It's unlocked and i've changed the setting to allow 4G on t-mobile (AWS).
I have an update available but i have to put in a AT&T sim to get it. If i do the update, will it re-lock the AWS band?
Phone is completely stock and not rooted.
Edit: To clarify, i'm not to worried about the minor updates, but i'm mostly asking about the android 4.3 upgrade that samsung will push out in a few months.