If you want to try out Qt Everywhere on your Efika MX you need to build it.

It requires a lot of dependencis so I sugest that you do it ON your Efika MX.
You will need some extra storage like a USB disk or a NFS mount.

Building it:

Download the latest Qt Everywhere sources from , http://qt.nokia.com/
Unpack it and configure it with: -embedded --prefix==yourstorage
This will not give you GL functionality but the software screen driver is very fast.
Build it with : make ;make install

To run something:

Add the -qws flag to the first app you intend to run on the framebuffer

Good luck !