Chronic Dev Team has released a new version of Greenpois0n. The new version called Greenpois0n RC6.1 includes the fix for famous iBooks issue for jailbreak iPhone, iPod Touch & iPad. In past few days, all greenpois0n Jailbreakers, who attempted to open e-books purchased from the iBooks store were prompted with an error message: There is a problem with the configuration of your iPhone. Please restore with iTunes and reinstall iBooks. And, if the device was restored from iTunes, it removed the jailbreak.