Last night I plugged my iPhone 4 into a dock and it was working fine, it was not bricked. Now today I go to plug my iPhone into my computer and nothing happens. The lightning bolt doesn't show up on the iphone and it doesn't show up in iTunes. Although, the battery level does increase at a VERY slow rate, maybe 2 percent every hour if that. I do have OS 5.1.1 and it is jailbroken. I have no way of restoring it because I can't connect to itunes. When I plug it back into the dock, it charges fine though.

Any help with this?