Just in case you missed this news, iOS 5.0.1 untethered jailbreak was released last month which can jailbreak all A4 based and older devices. Pod2g, who developed 5.0.1 untethered jailbreak, is still working to bring an untethered jailbreak to newer A5 based devices such as the iPhone 4S and iPad 2.
Corona 1.0-5 is now available on Cydia and Redsn0w 0.9.10b4 can now be downloaded from the Dev Team’s website to fix iBooks and apps crashing issues.
If you have already jailbroken your iPhone with redsn0w, you can install the latest release of Corona on your device to fix the iBooks issues. Launch Cydia, go to Changes tab and tap the Refresh button on top. Search for Corona Untether and install it.
If you’re still not running iOS 5.0.1 now is the best time to upgrade before it’s too late. Unlockers please, please always remember to use custom firmware to preserve your baseband. You can download custom iOS 5.0.1 from here or build your own using sn0wbreeze, redsn0w or pwnage tool.