I kept looking around to see if it could be done without iFile and only realized that they had fixed the whole issue after the post. I installed corona (1.0-5) which I think is equivalent to updating redsnow from 0.9.10b3 to 0.9.10b4 and my original ibooks 2.0 now works.
I am still curious though as to whether the terminal method works (for knowledge's sake)...
more so is battery life short after jb on 4gs?
