hi guuys.
I try to use OS 3.0 but I didnt have any ID from Apple developers.
And I locked in a picture which show "the cable and itunes"
And I try to downgrade to OS2.2.1
I have problems like
when I go into DFU , itunes cant find my device. It said ERROR 2001
So I can not use itunes to do any things
And I used recovery model to restore iphone.
I have ERROR 6 issue.

Any ideas?
I really need to fix the problems

Thank you..