Dfu mode is usually used to jailbreak your iPod touch

Hi

To put your device in DFU mode

Hold the sleep/wake button and the home button for 10-20 secs.

Easy.

Try disabling antivirus and farewell, than try to go to dfu mode by yourself until you see apple logo, and if it doesn't work try reinstalling redsnow

You mean DFU mode? It is a feature that can fix iDevice bugs or glitches when you face issues. But sometimes, if you face the iDevice stuck in DFU mode, you can use iTunes to fix the stuck issue or use an iOS repair tool like UltFix, TunesKit, Tenoshare....

Connect it to your computer and open iTunes. Restore it.