Android Forensic Setup and Pre Data Extraction Techniques - Practical Mobile Forensics - page 254

Updating the settings.db file
To update the settings.db file, perform the following steps:
1. Connect the device to the forensic workstation using a USB cable.
2. Open the command prompt and execute the following instructions:
adb.exe shellcd /data/data/
com.android.providers.settings/databases
sqlite settings.db
sqlite>update system set value=0 where
name='lock_pattern_autolock';
sqlite>update system set value=0 where name=
'lockscreen.lockedoutpermenantly';
3. Exit and reboot the device.
4. The Android device should be unlocked. If not, attempt to remove gesture.key
as explained earlier.