Thanks @davidfor the image unfortunately didn't work. I looked at the hardware on the back and the CPU (biggest chip?) has a large "M" on the back so I'll assume a Marvell chip
oh well, I'll have to wait for a Marvell Kobo to bite the dust so it can be imaged...
I also have no way of knowing what firmware I have on this Kobo as I'm not the original owner.. Still been fun trying to get it to work.
as a booby prize I get a 2GB micro sd card!