Android 2.3 20111102 firmware for 7'' HaiPad M7X tablet PC. Add support for 3G WiFi sharing internet. How to install the firmware? 1).Using a TF card(a 2gb or less would be better) and extract the downloaded file and put all the files directly into the root of the TF card; 2).Turn off the tablet and put the TF card into the tablet.Press "M" button,at the same time,press "Power On" untill you see upgrade screen; 3).Have a look the words in the screen and make sure no er……