How to – Downgrade iPhone 2G 3G OS 3.1.3 to 3.1.2 or lower

Earlier the Dev Team warned the iPhone users not to upgrade their iPhone to 3.1.3, to preserve their broadband and wait till the next version of Pwnage Tool. The reason behind this is that upgrading to 3.1.3 with Ultrasn0w/Blacksn0w will caused the iPhone users lose their unlock and will unable to get it back. The [...]