Here's the Toro (Verizon) file for the one that fails to flash. this will NOT get you on the notwork, just allow you to beet UbuntuOS with wifi and other compatible radios. I am working on radios right now. (Though it looks like there's not much use in this dev preview honestly, that should do tho job)

http://ompldr.org/vaGpreg/toro_ubuntu.zip
Current:
Nook HD+
ROM: CM10.1/Arch Linux

Retired:
Samsung Galaxy Nexus (Toro)
Rom: Paranoid Android