Apple has released iOS 4.0.2 and is available for download.You can jailbreak iPhone 3G iOS 4.0.2 with RedSn0w 0.9.5b5-5.Here is the complete step by step guideline for those who want to jailbreak iPhone 3G.
Disclaimer: This guide for educational purposes only. So, try it at your own risk. We can NOT be held responsible if anything goes wrong.
The steps are given below.
Restore iOS 4.0.2 on your iPhone 3G.iTunes 9.2.1 is required to do that.
1. Run the downloaded redsn0w 0.9.5 beta.
2. Hit the Browser button. Select the iOS 4.0 IPSW file. (Yes iOS 4.0 NOT 4.0.1, that’s the tricky part)
3. Check mark Cydia and hit next button.
4. Check mark Enable Multitasking and Wallpaper.
5. You’ll be instructed to put your iPhone into DFU Mode to install jailbreak.
6. When your iPhone 3G comes back up, you’ll notice Cydia has a blank white icon. Allow Cydia to reorganize, then accept the update it offers. When Cydia restarts, you should see its real logo now.
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