ironass
Well-known member
- Mar 9, 2015
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I'm trying to update my phone to Marshmellow 6.0 but according to the T-Mobile software update thing the build of android lollipop I have has been "modified in an unauthorized way." I never modified this phone at all.
What do I do?
Posted via the Android Central App
Hello and welcome to Android Central Chad Davis2!
AFAIK, Android 6.0.1, Marshmallow, has not been released for the T-Mobile Galaxy S5, G900T. Android 5.1.1 is the latest firmware for that model.