I have been at this for several hours now and I am at my wits end. :(
I have a virgin apple tv with 4.3. I am trying to dump the SHSH using iFaith. I have tried many combinations of the following.
4 different micro usb cables
3 different machines running iFaith
2 different versions of iFaith
DFU from usb only and DFU with power and usb cable
The end result is no matter what i try, iFaith says “you failed to enter DFU. Please try again”. According to the usb status I have an apple TV in DFU mode, but iFaith refuses to see it. Any ideas what I am missing?
So I think I have narrowed this down to USB port power issues. I would get to uploading iBEC and stall just as OP has described.
I took a hint from the post above and tried the power cord trick with no love but did not stop there. I thought what if I used a powered USB hub since I was getting power overload on USB port messages from windows.
The powered USB hub port gave me a different result but not as far into the iFaith process. So, I experimented.
I’m not sure exactly what I did since I was trying all sorts of combinations, but I think it was pulling the power to the USB port hub as iBEC was loading. Like magic, worked and i got my 4.3 shsh blobs.
All I can suugest here is to try all sorts of combinations until something works for you.