Everything works great on this 8" tablet, but I have an issue with the battery. Although it takes many hours, my Pipo S2 will eventually charge to 99%. It then discharges very quickly into the 30's % range without even using it. I then tried to recalibrate the battery but it requires to be rooted first. I then used 2 different rooting methods to root the unit. Both times I was notified that the tablet is rooted. Then when I used the Root Checker App to verify it I got this message: "Sorry! This device does not have proper root access. ++Due to security concerns, Google bans applications from providing root access ++Will not root this device. Will verify proper root installation." Does anyone have a solution to my problem. Any comments?