New firmware for Jetbook
This firmware adds Adobe Digital Editions DRM support. With that support we get TOC in our epubs. I was able to authorize my jetBook with Adobe Digital Editions and I have tested with a couple of Library books and works ok. The Adobe Mobile Reader is version 9.0.26696
However, there is no dictionary with epubs in this firmware release (probably since they open with the adobe viewer instead of fbreader). We also lose the left and right arrow buttons for page turns in epubs.
The mobi and fb2 formats use fbreader so looks pretty much the same as the previous firmware for those formats... with no TOC but with dictionary support.
I was able to hack the firmware/adobe viewer to have a user cusomizable userStyle.css like the Sony's do (and like I did for my pocketbook360). Custom fonts work ok, but text-align and margins don't work. I haven't been able to fix the horrible margins on the 2 library books I currently have checked out (the margins get gigantic as I increase the font).... but I can fix the margins on both my PB360 and PRS-300 with a userStyle.css file so it appears to be either the Adobe Reader version or the jetBook implementation of it.
I would say that if you want to checkout library books without stripping DRM, this is probably the firmware to use for now.... otherwise might want to wait for an official version.
If there is any interest I can post my hacked version of the firmware somewhere for people to play with using the userStyle.css file.