Users who ended up using Redsn0w 0.9.5 Beta 5 or Pwnagetool 4.0 to jailbreak iOS 4.0 on iPhone 3GS & iPhone 3G are facing issue with iBooks app, needless to say the issue is caused by iOS 4.0 jailbreak tools and iPhone dev team has acknowledge this.
The good news is the fix for iBooks issue is ready; iPhone dev team has updated Redsn0w to Redsn0w 0.9.5 Beta 5 release 4 & Pwnagetool 4.0 to Pwnagetool 4.0.1. You will need to re-jailbreak your iPhone 3G/3GS iOS 4.0 just deselect Cydia (you don’t want to reinstall Cydia over itself) while jailbreaking again.
Download Updated Redsn0w
Download Updated PwnageTool
How to Guides for reference
- Jailbreak iOS 4.0 GM on iPhone 3G & iPod Touch 2G with Redsn0w 0.9.5 B5
- How to Jailbreak iPod Touch 2G 4.0 iOS with Redsn0w 0.9.5 Beta 5
- Download Redsn0w 0.9.5 Beta 5 to Jailbreak iOS 4.0 on iPhone 3G/iPod Touch 2G
- Jailbreak iOS 4.0 on iPhone 3G/3GS with Redsn0w 0.9.5
- How to Unlock iPhone 3G/3GS 3.1.2 Firmware with Ultrasn0w