[Mac Only] Downgrade 3.0b to 2.2.1 iPhone, iPhone 3g, and iPod touch 1g: Put your device into DFU mode and option-click restore with your 2.2.1 firmware. (NOTICE: if you own an iPod touch 2g, you can do this same method as well, but the one below can be used to restore with a custom firmware) iPod touch 2g: First, you will need redsn0w lite. (rslite) Click here to download redsn0w lite Second, you will need libusb. Click here to download libusb Put the "rslite" folder on your desktop and don't change its name. Open up "Terminal" by searching with spotlight: Please Register or Log in to view images Copy and paste the following commands into terminal (Don't forget to press enter after each command) Code: cd ~/Desktop/rslite Code: ./rslite Code: !ibss211.dfu Code: ./rslite Code: #pwn211ibss.txt Code: !ibss221pwn.dfu Your iPod's screen should be white. You can now restore your iPod in iTunes with ANY type of firmware excluding NOR only firmwares.