Touch Android on Kobo Touch N905 (without B or C)?

[zenfunk]

Hi guys,
when I found out I could install Android on my Kobo I was totally stoked. Just swap out the original SD- card which holds the stock firmware and pop one with Android on. I ripped my device open and bummer, no internal SD- card.

After some research I found out that I happen to own the Kobo N905 which is the oldest version which doesn't have an internal SD- card. Is there a way I could still get Android, maybe by dual booting with the external card?

Has anyone allready tried something like that?

Is there a way to get a firmware backup back in the internal memory if stuff gets screwed up?

Thanks in advance for your answers,
Christian