I have a Casio Commando GzOne that formerly took an Android system update from 4.0.1 to 4.1.2 when on Verizon's network, but I had to do a factory reset before moving to another carrier.

Now when I try to do a system update, it says it is updated, when it clearly is not. It is still stuck on the very not secure and very worthless 4.0 Android version.

The carrier said to call the manufacturer, which I did. Casio said they don't make phones AT ALL now, and Casio said to go on HowardForum to find the answer. I've searched everywhere and I don't see anything.

How do you upgrade a Casio c811 Gz'one from 4.0 to the 4.1.2 it should update to (at minimum).