IP4 Jailbroken can't connect to itunes

[tres]

I think it occurred after the cydia update.. No matter what computer I plug my jailbroken IP4 with 5.01 into, the computer won't recognize the phone. It charges just fine, just no computer access. This obviously poses a problem if I update to 5.1 and want to jailbreak (witch btw, I understand is possible but can't find the link to the jb)

Any ideas?

 

[iDonev]

There is already a thread about this issue - Link