We already reported that the Sn0wbreeze 1.7 version have been released and is available for download to jailbreak iOS 4 on iPod Touch 2G including MC model devices. You could now get your hands on Sn0wbreeze 1.7 to jailbreak iOS 4 on iPod Touch 2G (MC models too).
If you want to jailbreak iPod Touch 2G with iOS 4 (MC model also), then here is a guide to do that.
NOTE : It only works successfully if you are on 3.1.2 firmware or if you have the iOS 3.1.2 SHSH blobs.
1. Download the custom iOS 4 firmware for the iPod Touch 2G.
2. Download Sn0wbreeze 1.7.
3. Â The guide to jailbreak the iPhone 3GS and iPod Touch with Sn0wbreeze on Windows is almost alike. So now follow the guide posted here to jailbreak iPod Touch 2G (MC Model also) using Sn0wbreeze 1.7.