Will I lose unlock if I upgrade?
I'm running this phone on the tmobile network after I downgraded from 4.3 to 4.1.1 to unlock the phone. That worked perfectly and I'm now in tmobile with LTE and everything. My question: if I upgrade back to 4.3 will that lock the phone once again? I wouldn't want to go through the process again if it meant I would be locked from using my phone. I ask because of security issues with 4.1.1
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