It has been revealed that iBooks 1.2.1 contains a jailbreak-aware program that stops the app from loading books on jailbroken iPhones.
TUAW cites Comex of the iPhone Dev Team as saying that, before loading any DRM controlled book, iBooks runs a small program that is deliberately designed to fail to run.
However, jailbroken units will run it. Books detects this and refuses to go execute any further tasks.
Apple is believed to have taken this step to protect iBooks content from having its DRM (Digital Rights Management system) stripped off.
Some users have been complaining about newly released iBooks for iPhone having issues on jailbroken iOS 4 devices, according to an article by RedmondPIe, which offers extensive jailbreak and unlock guides.
The blog informs that the iPhone Dev Team’s redsn0w jailbreak tool has been updated to version 0.9.5b5-4 in order to fix this problem.
The updated software is available as a free download for both Mac and Windows users, though Softpedia would advise against employing such tools.
The official changelog is provided as well:
“There’s a new redsn0w beta […] that should fix any iBooks problems people were seeing. Just run this new version 0.9.5b5-4 and deselect Cydia (you don’t want to reinstall Cydia over itself).”
Apple is on track to release iOS 4.3 soon which is expected to break all existing hacks.
This article has a purely informational purpose and doesn't, in any way, suggest that you should hack your Apple device.
Using hacks may render your device unusable, or may reduce the quality of your experience employing the respective device.
If you choose to download and install jailbreak tools, you will do so at your own risk. Unlocking / jailbreaking your iPhone / iPod touch / iPad / Apple TV may violate your warranty or the EULA with Apple and / or your cellular-service provider.