There are two different 030 patches for Lemmings, but neither one is compatible with any version that has been dumped yet.
I bought a physical copy of the game myself, but it ended up being one of the already dumped versions.
Has anyone else got a copy? The file size of lemmings.x needs to be 321686 or 321712 to be patchable.
I'd love to be able to run the game on my x68030.