Im just about to give up. Since Sunday i have being trying to upgrade my iphone to custom fw 2.0 without any success. I have used 2 Mac and 2 pcs, all giving the same problem.

Cannot upgrade to apple or custom 2.0 eather pc or mac
Only can restore to 1.1.4

DFU = Blank Screen and itunes recognizes it
Recovery = Should be cable image ( on some phone i get apple logo )

I have seen all possible errors 1600's and else

I have being reading the forum all week and i see many people having the same issues.

Hope someone with more experience can help as clarify this

Thanks