Apple ipod

How to downgrade iphone 3g software 3.1.3 to 3.1.2?

Im trying to jailbreak and unlock the iPhone for T-Mobile. He was three days ago and now the firmware modified. I have to improve and reduce 3.1.3 or is there a way to update to 3.1.2 28/02/2000

Never upgrade to 3.1.3 and then decline. It is another ROM drive and hack its not to reverse the trend 3.1.2. I go online and find the software file 3.1.2. I click Restore and press the option, he thinks it's on the Mac I do not know PC and restore 3.1.2. Once you update 3.1.3 can not open at this point.

How to Jailbreak 3.1.2 Firmware On ALL iPhone and iPod Touch W/ BlackRa1n Windows