I bought me722 customized by Unicom from Tianjin Datang mobile phone. Is system 2.2.2 owned by Bank of China? Can I refresh to above 2.3? Can I get the root?

Unicom customized mobile phone. If you are the Bank of China. The machine can automatically update to Android 2.3.4. If it is updated, I suggest you update it under WIFI, because you need about 160 megabytes of traffic. It is also suggested that LZ should not ROOT or brush the machine, because: 1, brushing the machine is risky. 2, 2, root and brush machine, if you are licensed, the official after-sales service is not guaranteed. So the landlord is cautious! ! !