Few days back, we told you that @planetbeing has resolved issues with iBooks DRM Books which would be incorporated in upcoming version of Corona. Now, the Redsn0w has been updated as well. The fix for iBooks which causes certain images to appear incorrectly due DRM issues is now available in this update. It occurred because iBooks immediately recognizes if you have a JailBroken iPhone or not. 
@Planetbeing, who is a marvelous iPhone hacker has contributed again by coding a utility called ‘crazeles’ which lets iBooks to behave as if it’s been installed on a non-Jailbroken iPhone. This is something similar to what @comex did when iOS 4.x JailBreak was released in the past. If you had been experiencing any issues with iBooks after JailBreak, re-run Redsn0w 0.9.10b5 over the pre-existing JailBreak and uncheck ‘cydia’ at the same time.
Also, you can install Corona from the Cydia which is now updated to version 1.0.6. Both have the same patches, so it doesn’t matter which one you choose. Let’s know if you have any doubts in the comment section. We will reply shortly! Download Redsn0w o.9.10b5 from the links below: