С помощью redsn0w 0.9.10b5 можно сделать непривязанный джейлбрейк iOS 5.0.1. (iPhone4, 3GS, iPad 1, iPod Touch)
redsn0w version b5 incorporates yet another fix for iBooks, this time involving DRM. *@planetbeing wrote a utility called “crazeles” that overcomes jailbreak detection by iBooks that would cause about 10% of images to show incorrectly. *This fix is similar to the “hunnypot” fix that @comex wrote for the 4.x jailbreak. *As usual, you can choose to install the fix either by re-running redsn0w over your existing jailbreak (de-select Cydia if you do that), or by installing the corona package from Cydia (it’s the same set of files no matter which way you choose).