Here is a tool brought to you buy the Dev-Team. its a great app that allows you to "Pwn" your ipod/phone and then build custom .ispw files (Custom firmware) which can include custom boot Images and custom Recovery images. The windows version (Winpwn) was made by CMW while the Mac version was made by the Dev Team. Its a great app and i recommend all to use it. here is a Youtube guide on how to use the Windows version however the guide can be used in exactly the same manner for the Mac version. http://youtube.com/watch?v=sKgh2ClwZ_U Hope this helps and good lucking Pwning lool.