DFU Mode
First off, you’ll gonna restart your iPod Touch into DFU mode. It somewhere before the Recovery Screen, if you asked me. Start by turning on your iPod Touch and connecting it to the USB, then launch iTunes so that it detects your iPod Touch. Now you follow these steps:
Step 1: Hold down the “Home” button
Step 2: Hold down the “Standby” button
Step 3: When it says “slide to turn off”, ignore it. It should restart with a blank screen. Look at iTunes, and your device should be removed. Now lift the Standby button, while still holding onto the Home button.
Step 4: Keep holding the Home button until the iPod reconnects on iTunes. When the device shows up in iTunes, that’s when you’ll need to lift up your button. If you wait any longer, it will go into Recovery Mode, and that’s not what you want. Your iPod should be blank (as described by RupertGee).
This will force the iPod Touch to be in that mode until you perform an “upgrade” on it.
För mej funkade det när jag var på väg o slänga IPHONEN nästan, hittat här:
http://dermapthera.wordpress.com/2008/01/17/downgrade-ipod-touch-version-113-to-111/