где найти прошивку для китайского планшета ustar u700

ХАРАКТЕРИСТИКА ПЛАНШЕТА
Operation System : Google Android
--OS: Google Android 4.0.3
--CPU: Cortex-A8 ARMv7 Processor
--CPU Frequency: 1.5GHz/ Actual 60.0-1008.0MHZ
--GPU Renderer: Mali-400 MP
--GPU Version: OpenGL ES-CM 1.1
--RAM: 512MB/ Actual 306.7MB
--ROM: Actual 1007.9MB
--NAND Flash: 8GB
--Screen Resolution: 800 x 480 pixels
Touch Screen : Yes, 7 inch touch screen
Touch Screen Type: 5-points capacitive touch screen
G-sensor: Gravity acceleration sensor
Keyboard: Android virtual keypad
WIFI: Internal 802.11B/ G/ N wireless LAN
Camera:0.3MP front camera
Built-in Devices : built-in microphone and speaker
I/O Ports:
----1 x TF Card Slot
----1 x 3.5mm Earphone Jack
----1 x Micro USB Port/ Charging Port
----HDMI Port
Audio Format : Yes, High-Fidelity stereo speaker output. Supports MP3, WAV, WMA, AMR, MID, OGG
Video Format: Yes, supports MP4, 3GP, AVI, DAT, FLV, MPG, RMVB, WMV, MKV
Picture Format : Yes, supports JPG, BMP, GIF, PNG
E-book Format: Yes, supports TXT format
Handy Functions: Sound recorder, Calculator, Calendar, Clock, Alarm
Battery: Built-in rechargeable 3200mAh Li-ion battery
Color: Mainly white with black
Net Weight: 344g/ 12.13oz
Size: 180 x 120 x 10mm/ 7.09 x 4.72 x 0.39inch