um2703-GB-1.3-sdUp-381 firmware (latest)

Release Log(1.3):
1.Fixed Google Market cann't run after update issue.
2.Fixed Bluetooth activates only once bug.
3.Fixed USB 1.1 device can not suspend bug.
4.Add USB Mouse cursor support.
5.Fixed Automatic date & time issue.
6.Add vibration while press touch key (Such as SEARCH,MENU,BACK,HOME) function.

Known Bugs
- wi-fi module shuts down
- random vibration
- tablet blocks usb connection on timeout
- some apps not supported at Google Market
- Gtalk doesn't work

Download: um2703-GB-1.3-sdUp-381.zip | mirror

Useful Apps

SD Maid

A maid for your android, to regain precious memory and keep it clean & tidy.
Market | Download

Advanced Wifi Lock

Attempts to fix Wifi Sleep problems. This app forces wifi to stay connected when the screen is turned off and should work on all devices (phone or tablet).
Market

File Expert

Powerful File Manager/WIFI File Transfer Web & FTP/App Manager...All in One
Market

Mx Video Player

Video player that comes with support for almost every video file format known to date along with multiple subtitle files
Market

SuperOneClick

SuperOneClick is a simple tool for "rooting" your Android phone. It allows partial or full rooting and also enables "unrooting."

Download: SuperOneClick v2.3.1-ShortFuse

um2703-GB-1.1rc1-sdUP firmware

Known bugs:
- wi-fi module shuts down
- random vibration
- tablet blocks usb connection on timeout
- some apps not supported at Google Market
- Gtalk doesn't work
- new Google Market auto-update, will force close
- bluetooth activates only once

um2703-GB-1.1rc1-sdUP firmware: download | mirror

A8HD2.3.4-_1.0rc4 firmware

Known bugs:
- very low battery life
- some apps not supported at Google Market
- Gtalk doesn't work
- date/time resets

A8HD2.3.4-_1.0rc4 firmware: download | mirror

A8HD(2.2)固件 firmware

Known bugs:
- Wifi goes into sleeping mode when screen turns of, even with settings "never sleep"
- low battery
- screen turned for three sides

A8HD(2.2)固件.tar firmware: download | mirror

(credits to synergy84)