Chronic Dev Team has just released Greenpois0n RC6.1 for both Mac OS X and Windows.
This version has successfully patched with iBooks fix. For who don't know, many users have problems with iBooks after jailbreaking iOS devices with Greenpois0n.
How to know that you have been infected? If you saw this message “There is a problem with the configuration of your iOS Device. Please restore with iTunes and reinstall iBooks“ so your iOS device has been infected
Download Greenpois0n RC6.1 Windows
Download Greenpois0n RC6.1 Mac