Great hope, since the current jailbreak is flawed. Had I known the iBook will be such an issue, I would have stayed on iOS 4.3.5. I know that there are multiple "fixes" available, and I attempted all of them. They worked on only two of the four iOS devices that I have.
Any help in the matter would be much appreciated.
Nir Hus MD, PhD.
http://www.NirHus.com
http://www.Nir-Hus.org
@NirHus