Revert OS

From AlwaysInnovating

For 2009-08.a, 2009-08.b, and 2009-09.a, you can easily revert the Always Innovating OS to its default state by inserting the SD card into a Linux or Mac system and re-formatting the fourth partition, with a command such as "mkfs.ext3 /dev/sdb3".

For 2009-09.b, 2009-09.c, 2009-11.a, you can easily revert the Always Innovating OS to its default state by inserting the SD card into a Linux or Mac system and re-formatting the fourth partition, with a command such as "mkfs.ext3 /dev/sdb4".

For 2009-12.a, you need to reboot and press the screen when you see the red background. Select option #5 to reset your Touch Book.