Youtube Video Tutorial
Downgrade iPhone 3.1 Firmware To 3.0.1/3.0
In my other post about Downgrade iPhone 3GS 3.1 to iphone 3.0 OS Firmware, I found that many people failed to downgrade their iPhone 3.1 to 3.0 but only few succeeded, therefore to assist iPhone OS 3.1 who wishes to downgrade to 3.1 but so far found nothing that actually works, I provide 1 Youtube [...]