To my knowledge, the most recent version 2.5.2 "patched". First install 2.5.1, available here:
http://hightech.afmag.net/rasterfari...sion-here.html
Then there's a patch to install on top of that:
http://kmfstudio.com/rasterfarian_252_patch.html
Not sure why you'd want it, though. RasterFarian does the same thing as PDFLRF, only not as well. (And I know you have PDFLRF.)