I'm running CSSU-Thumb and backupmenu/bootmenu and am trying to boot Nemo from an SD card. In the past, i've used the flasher with -k and -l switches and it's booted fine. That's not bringing me any joy (doesn't get past upgrade mode screen, maybe not even receiving the kernel?) and I like the idea of actually being able to reboot into Nemo without having a machine and the flasher with me so am wanting to install U-boot. Currently getting errors from HAM about the correct version of kernel-modules being installed.

Am I correct in thinking that it can't be done this way around, that I'd have to reflash, install U-boot then do the upgrades?