Using Pwnage to "get in" to DFU Mode on old boot rom
I've never been able to make it do this in several tries. I've built custom IPSW's for 3.1.2 and 4.0.0 and have installed them in a few phones but every time I have to go through the whole build process for Pwnage to kick the phone into DFU mode.
If I click on the 3GS phone model and then click on the DFU button, it says "connect device to USB" and never goes anywhere.
If I go through the build process, it delivers the payload to get in and then tells me to start up itunes and load the new custom IPSW.
What am I doing wrong? or did I miss something?