Redsn0w 0.9.10b5 is available to download now for iPhone 3GS, iPhone 4, iPod touch 3G, 4G and iPad 1 running on iOs 5.0.1!
The "Crazeles" is designed to get your jailbroken device out from iBooks detection that would effect images no to show incorrectly in 10% percentage measurement.
How to fix iBooks after jailbreak iPhone 4s untethered on iOS 5.0.1 using Redsn0w 0.9.10b5
You can download the Redsn0w 0.9.10b5 from download links below based on your OS, then re-jailbreak your device (if yours is already jailbreak) by hitting the Jailbreak button but don't forget to uncheck or de-select Install Cydia option. Or you can use Corona once it's released, it contains the same set of files with Redsn0w.
Download links of Redsn0w 0.9.10b5.
Here are the download links for Redsn0w based on your existing operating system, as for Windows make sure you set Administrator role.
Download RedSn0w 0.9.10b5 for Windows.
Download RedSn0w 0.9.10b5 for Mac OS X.