Toshiba released the Folio 100 tablet in 2010. It was one of the company’s first Android devices and it shipped with a 1 GHz NVIDIA Tegra 2 dual core processor, a 10 inch, 1024 x 600 pixel display, and Android 2.2 software.
While the Toshiba Folio 100 was canceled a while ago and Toshiba hasn’t offered a software update in a while, there’s an active community of independent developers making up for the oversite, and now there’s an unofficial build of Android 4.1 Jelly Bean available for the aging tablet.
There are currently two different builds of Android 4.1 for the tablet.
Xda-developers forum member Atheros has ported CyanogenMod 10 to run on the Folio 100. This is a custom version of Android 4.1.1 Jelly Bean which is still under development.
The Folio 100 build is also under development. There are problems with WiFi, some display glitches, and other problems. But Atheros is still working to squash some of those bugs.
Meanwhile, developer DerArtem has also ported CyanogenMod 10. This build doesn’t support audio over Bluetooth, and the digital compass and a few ohter items aren’t working.
You can find more information about hacking the Folio 100 and installing a custom recovery so you can install CyanogenMod 10 or other firmware at the xda-developers reference post.