Interesting that the firmware is available. Just an idea. Could this firmware be used to flash another device? I have an old and slow tablet, Viewsonic Viewpad 10pi that came with Windows 7 and Android 2.3 (Intel Atom Z670 Oak Trail with PowerVR GMA600 graphics). I've installed Debian on it, but it is quite slow to run a modern desktop on and the touch interface is not that good on any modern distro (at least two years ago when I tried). I guess Sailfish could be faster, but there could be problems with the graphics. It needs quite a new kernel to get any acceleration from the dreaded PowerVR graphics chip.