Just to clear this up in your mind: I was not able to have any success using the reset button or any of the other key combinations to reset the device.
I was able to unlock this tablet for a client using the following instructions (It is very technical but it works!):
Requirements
- PC or Laptop with a working OS (I used Linux, however you can use OSX or Windows)
- Android SDK.http://developer.android.com/sdk/index.html
- Connect android device via usb to your PC
You will be using adb commands from the SDK to reset the device locks.
To run the adb-commands you have to change to the platform-tools directory in your android-sdk (/path/to/your/android-sdk/platform-tools).
Now you can use the following commands:
adb devices # verifies your device is connected
adb shell
cd /data/data/com.android.providers.settings/databases
sqlite3 settings.db
update system set value=0 where name='lock_pattern_autolock';
update secure set value=0 where name='lock_pattern_autolock';
update system set value=0 where name='lockscreen.lockedoutpermanently';
update secure set value=0 where name='lockscreen.lockedoutpermanently';
.quit
exit
adb reboot
Resources for this post:
https://maxoberberger.net/blog/2013/08/unlock-android-device-using-adb/
http://my.oschina.net/zhuzihasablog/blog/97924