Hello. I have the 3g classic(160GB) and it is on firmware 2.0.4. I want to put it back to 2.0.2. I can put the ipod in dfu mode. And I have the files iPod_188.8.131.52.ipsw and iPod_184.108.40.206.ipsw.signature. These are fresh files straight from apple. Is there any way I can downgrade?