Ok, so I have an iTunes with 3.0 on a Mac 10.4 and I'm trying to use Redsn0w 0.8. However, right at the end where it asks to put into dfu mode, I follow the instructions, and it says it doesn't detect my device. What is wrong? Also, will I have to downgrade to 2.2.1 and then use Redsn0w? Thank you.