I've asked for a download link several times with Kobo support - sometimes it seems an option, other times they've avoided the question. I've also raised the question a couple of times in other threads on this forum.
Had my Kobo for nearly 2 weeks, and had it 'bricked' for almost all of that time : not happy at all. May demand refund and wait for the Kogan Reader
http://www.kogan.com.au/shop/ebook-r...-e-ink-screen/ .
If the source code must be made available under the GPL requirements, then there is no reason to be so reluctant to provide the binaries as well!
Every other piece of equipment that I've upgraded the firmware on has a download link - can't see what the problem is.