I just received a new Nova 10 Allwinner a31 Quad Core tablet with Android 4.1.1 and I "tried" to flash it to the 4.2.2 version with Phoenix Suite following the instructions on Dorkfiles' site. The upgrade succeeded but the Wi-Fi connectivity was disabled. Every time I try to toggle it on, it switches to OFF. Airplane mode is OFF. I tried to restore the tablet to factory state and tried to upgrade it again with no success. If I try to return this tablet to the company, they will know it has been rooted and will charge me many $$$ to fix it.Any help will be greatly appreciated.