THIS WON'T WORK G4 H811 AMD A FEW OTHERS. CARRIER'S BYPASS IT.
Go to Wifi Test.
Go to OTA Setting.
"Delete all your wifi connections. TMO is forcing wifi on and if you've logged into your network you will be updated." (This last step is your only option at this point with some carriers forcing update over wifi even with OTA Disabled)
Then turn-off wifi. (Just added this as TMO forces update on wifi without prompt)
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