An update for the Corona untethered jailbreak tool has been released for all A5-based devices.
If you’re having trouble with iBooks on your newly-jailbroken iPhone 4S, you’re not alone. As with most jailbreaks, Apple’s eBook app can tend to act up and sometimes not work at all when opened on a liberated iOS device. Thanks to the most recent Corona update in Cydia, iPhone 4S jailbreakers should be able to use iBooks on the iPhone 4S. The update also addresses general stability issues for users on iOS 5.0 and is recommend for iPad 2 owners as well.
Unfortunately, the original version of Corona had sandbox kernel patches that broke iBooks. As of 1.0-5, Corona uses the working ones from comex.
As of Corona 1.0-6, planetbeing has done a large amount of work to improve errors loading images in iBooks.
Versions 1.0-6 and 1.0-7 did not work on iPhone 4S 5.0, despite the package claiming to install on that setup.
Not only should iBooks errors be resolved, but iPhone 4S owners on 5.0 shouldn’t run into the same stability issues after installing this Corona update in Cydia. The weird white app icon bug should also be fixed. (In case you didn’t know, Corona is the underlying exploit for the iPhone 4S and iPad 2 that allows you to keep your device jailbroken after rebooting.)
The father of Cydia, saurik, recommends that all jailbreakers on iOS 5.0.1 install the latest Corona (not just iPhone 4S owners). If you have a jailbroken iPhone 4S or iPad 2 on 5.0 or 5.0.1, you should download this update. If you haven’t already installed Corona, search for it in Cydia and install it now. You won’t lose any of your data when you update. You can re-jailbreak your iPhone 4S or iPad 2 with the latest version of Redsn0w on the desktop for the same effect. [Windows direct link] [OS X direct link].