Learn how to flash/unbrick or upgrade this device from here
Note
Follow the instructions on how to flash the device carefully from the link above
I will not take responsibility on whatever may happen to your device.
Make sure you are downloading the exact ROM of the device you want to flash because
flashing a wrong preloder, will make the device completely dead
(can't power on, can't charge and will not be detected by a computer)
INNJOO F2 SPECS
Android 4.4 (KitKat) 3G version
Android 5.1 (lollipop) for LTE version only
Android 5.1 (lollipop) for LTE version only
10.1-inch Touchscreen, 720 x 1280 pixels IPS, 118ppi
243 x 164 10 mm
243 x 164 10 mm
1.3 GHz dual-core Processor
MT6572
Mali - 400 GPU
MT6572
Mali - 400 GPU
1GB RAM
8 GB Internal Memory
Supports up to 16GB microSD
2 MP Rear Camera, LED Flash, Auto Focus
0.3 MP Front Camera
Dual SIM
EDGE / GPRS
WCDMA
WIFI 802.11 b/g/n
bluetooth 4.0
4500mAh Battery
665Mb