The jailbreak community is lucky enough to have talented and dedicated individuals who are willing to work around the clock in order to bring us the latest jailbreak tools. And thus we now have the iOS 5.0.1 untethered jailbreak which everyone have previously been clamoring for. However, the jailbreak is not without its issues. Probably one of the most common issue that is faced by many jailbreakers is that the exploit somehow render iBooks to be unusable, which is no less than one of Apple's many attempts to cripple jailbreaking on the iOS 5. Now another update from Redsn0w aims to fix such issue, once again.
It was about less than two weeks ago when Redsn0w 0.9.10b4 was released in order to fix the issue of iBooks crashing as soon as it is launched. Now, even though that looks to be taken care of with b4, there is still a prominent issue with iBooks, this time involving DRM. Some users have experienced that about 10% of the images and text won't display properly when viewing a book that is DRM-protected.
Fortunately, legendary hacker @planetbeing has been looking into it and have developed a utility called “crazeles” which is designed to fix the DRM issues with iBooks. The utility has been integrated into the latest version of Redsn0w, dubbed as Redsn0w 0.9.10b5. According to the iPhone Dev-Team blog, this particular fix shares the same quality as “hunnypot”, a fix which was written by Comex for the 4.x jailbreak.
So if you have been experiencing DRM issues with iBooks, then we suggest that you download the latest version of Redsn0w (download links are given below) and redo the jailbreak. Again, just make sure that you de-select Install Cydia when doing so because otherwise it will mess up your jailbreak tweaks and apps. According to MuscleNerd, Corona should also update to version 1.0.6 soon but by the time of this writing it is still 1.0.5. If you don't like using Redsn0w, we suggest that you wait for the Corona update instead. For instructions on how to jailbreak your device, simply refer to our iOS 5.0.1 Untethered Jailbreak guide.