Horrible desire to scream "Land ho! Firmwares off the starboard bow!"
The links I've found for the 2.10.0 firmware are:
Glo/Aura HD:
http://download.kobobooks.com/firmwa...ate-2.10.0.zip
Aura:
http://download.kobobooks.com/firmwa...ate-2.10.0.zip
Have fun!
Regards,
David