How to restore iphone 3G iOS 3.1.3 with firmware 3.1.3 without updating the firmware?

[abiarz]

How to restore iphone 3G iOS 3.1.3 with firmware 3.1.3 without updating the firmware? N
Pls. help coz my home button is not responding well. Coz if it's an hardware issue I can't reset(Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds or until the Apple logo appears.) my iphone. Which I can reset it. My friend told me maybe it's a software issue he recommend to restore my iphone. But I don't know how

[iYeow]

Download the 3g 3.1.3 ipsw and do the Shift + Restore to 3.1.3 ipsw. Put in your official sim card. Go to jailbreakme 2.0 from Safari on your iphone. You don't need to do the trigger with this method.