I’ve spent 2 hours search around to find out a way to jailbreak my iphone4, here it is:
1. Download Limera1n http://www.limera1n.com/
2. Connect your iphone 4 to computer (Windows or Mac)
3. Launch Limera1n by double clicking it.
4. Follow the instruction on computer screen, hold the home + power button as requested
5. Release Power button
6. iPhone 4 enters DFU mode
7. your iphone 4 now is Jailbroken!
8. If you dont see any Limera1n icon on your iphone, simply reboot your device.
9. Install Cydia.
10. launch Cydia application, select the “manage” tab at the bottom, then tap on sources.
11. tap “edit” and then tap “add” button.
12, type in “http://cydia.hackulo.us”
13. Go to the search tap, look for a software called “installous” , install it
14. Now your iphone 4 is half way getting free apps.
15. Go to http://apptrackr.org/ and download any app then launch the downloaded .ipa file, it will be automatically added into itunes
16. Sync your iphone 4 with itunes, there you go!!
Sorry guys I’ve just recently received my iphone 4 few hours ago, I cant wait to play with my new toy now!
I will update this post with a little bit more pictures and detailed instruction, let me know if you need help! cheers!