updated 09:50 pm EST, Tue February 12, 2008
iPhone 1.1.3 jailbreak
iPhone users who have upgraded to firmware version 1.1.3 now have a viable jailbreak option with iJailbreak 0.5.1, an update to iJailbreak 0.5 that was released this morning. This iPhone-only jailbreak allows users to open up an iPhone with v1.1.3 installed in order to implement custom applications and services. The jailbreak requires users to implement bootloader 4.6, and will not function with any other version.
The earlier iJailbreak 0.5 release caused a problem on PowerPC-based Macs, which resulted in segmentation fault errors. The incremental update should resolve these issues; however, the author notes that it has not been tested.