As iPhone 3GS old bootrom users can jailbreak their device through the jailbreak tools like Sn0wBreeze 1.6.2 and PwnageTool 4. These both jailbreak tools require the jailbroken iPhone 3GS to work properly but does not support iPhone 3GS jailbroken through Spirit tool.
So, here comes Spirit2Pwn patch from Cydia which could work for Spirit jailbroken iPhone 3GS to restore custom firmware iOS 4 on old bootrom.
The Spirit2Pwn only works for iPhone 3GS users jailbroken using Spirit on OS 3.1.3/3.1.2. So, you may follow the instructions below to jailbreak iOS 4 on Spirit jailbroken iPhone 3GS through Spirit2Pwn.
- Go to Cydia on your jailbroken iOS 4 iPhone 3GS
- Follow this URL http://repo.woowiz.net and then search for Spirit2Pwn in Cydia
- Install Spirit2Pwn
- After completing the installation you may jailbreak iOS 4 through Sn0wBreeze, PwnageTool 4, and unlock iOS 4 basebands 04.26.08 to 05.13.04 by using UltraSn0w 0.93.
Note: You may use this all guide at your own risk.
Warning: According to iH8sn0w New Bootrom users MUST NOT install Spirit2Pwn.