Hi, I just bought Hyundai A7HD around May 2012. I never root and flash rom. It still using 4.0.3 ICS. It working fine previously until recently the battery indication having problem. After fully charge, the battery indicator keep show 100% after using for few hours. Sometimes it will hot and sometimes not. But sometimes battery indicator will drop but in slow rate. Then my tablet will shut down when battery indicating it still having 50% battery. I tried reset to factory setting. It still the same. I also read here A7HD Battery Problem - SlateDroid.com. Does the firmware help? Because the person who having the problem is using Onix v0.3 (Thx R91). I think it is the firmware problem because this tablet and battery are still new.