I am due to have the tablet in my hands tomorrow, I will see what firmware it comes with but not sure whether to flash it or not.From what I gathered on the threads here:815 is the original fw (and one my tablet will more than likely have)827 is an unofficial fw from feiyu (also found on Flambe v3)907qm is an official fw with plenty of fixes but can only be flashed to devices ending in QM serial numb