Below are the direct download links for latest new redsn0w jailbreak. The latest version of redsn0w jailbreak has been released recently by iPhone Dev Team. The new redsn0w version is Redsn0w 0.9.10b5 and it resolves problems with images displaying in iBooks with DRM. This new version can be used for making a new jailbreak or fix the problems with iBooks on already jailbroken iPhone 3gs, iphone4, ipod touch 3/4 or ipad.
If you want to jailbreak first time you can follow How To Jailbreak Guide and use the below links to download the new redsn0w version.
If you have already jailbroken device you only do the jailbreak again by using the latest version of redsn0w (remember to uncheck the option “Install Cydia” to avoid any unexpected error. Similarly you can go to Cydia and install Corona for applying this update.