sudomod

Or do we have to use the provided image?

I'm trying to avoid setting up all my roms and emulators again

You can do, if you clone the git repo for the correct device and then run the 'install.sh' script it should work.

Note that you should take a complete backup as it may not work (i don't really support it and won't offer any more than what I say here)

If you are using the Circuit Sword (with CM3 module) the wifi won't work unless you use the pre-made image.