I just have Calibre on my Windows 7 PC and have it set up with a library in my dropbox. I figured that if I could net the main fbreader library to the dropbox that would work but I can't figure out where it is in the file system. I'd try rooting the device, but the instructions say to use the adb driver downloaded from the Lenovo support site for a Lenovo s2109a device, but I can't find that either. All I can find is an adb driver for the thinkpad tablet.
I've become rather fed up with Amazon's proprietary practices so wanted to use a different reader and fbreader seemed the best bet.
Is there a way to root the device that's described in this forum somewhere?