Please help me I have some ideas:
Try different USB port OR
Can I use latest version of sn0wbreeze (2.7), but it isn't indicating it supports 4.2.1? OR
Can I use Vmware to install Mac on my Windows 7 64 bit, then thru virtual Mac use pwnage tool, and if I get error then post you the Mac itunes logs?
Which is better or applicable idea?

