[RandomInsano]

As a fun co-incidence, I was playing around in Linux-land on the device and thoroughly bricked it by mounting one of the NAND filesystems in such a way that it modified some magic value and now UBoot refuses to load Linux.

I've been digging around for the last hour trying to find a firmware image. Thanks for sharing this!

Update: Here are the steps to get this working from a 32bit Ubuntu 12.04.5 live CD:

cat /etc/issue # Should return "Ubuntu 12.04.5 LTS \n \l"

DEB_LOCATION=/home/ubuntu/Desktop/kobo-desktop.deb

# Dependency junk and installation
sudo ln -s /usr/lib/i386-linux-gnu/libjpeg.so.8 /usr/lib/i386-linux-gnu/libjpeg.so.62
sudo dpkg -i libicu44_4.4.2-2ubuntu0.11.10.1_i386.deb
sudo dpkg -i libzip1_0.9.3-1_i386.deb
sudo dpkg -i libssl0.9.8_0.9.8o-7ubuntu3.2_i386.deb
sudo dpkg --force-depends -i $DEB_LOCATION

# Now run Kobo Desktop from the dash