This is tomal's patch for the EU firmware version. He put up the patch for making the firmware youself on the rockbox
Ifp Port page, but not the actual firmware, due to legal reasons.
I've patched the firmware for ease-of-use for everyone. It's available
here.
This firmware is 1.29EU UMS, and only has the 96kbps ogg limit removed. It still has the recording limit. You also cannot play .wma files with it, as it is modded to treat .wma files as code.