I'd delete my above post if mobileread had that option
Forgive me if it's obvious, but what should be by target path to getting the original image back onto the kobo? I thought uuu would be able to flash a full image to the emmc, but from nxp.com forums it seems the process is more like flash uboot, access uboot via serial, and use that to flash the ubootenv and rest of the emmc?