guys, could you help me out? i have a jailbroken iPhone 3G (3.1.3), and suddenly one day when i connect it to my pc it doesn't show up, it isn't detected in iTunes, and doesn't even show up as a plugged device, as if nothing was connected at all, so i can't sync at all. when i turn it off and plug it into the PC the apple logo shows up but it isn't charging or showing up as a plugged device either.. i tried connecting it to another PC but it still won't work.. but when i plug it to my wall charger it's charging up.. can anybody help me out? thanks a lot..

Make sure the following 2 services are running in the Task Manager under services tab.
AppleMobileDevice
iPod Service

If both services are running then try this:
- Connect your iPhone with computer using data cable.
- Open Device Manager and find your device.
- Right click on it and select uninstall.
- Wait a moment to refresh it.
- Unplug your iPhone from computer and plug it again.
- Windows will reinstall its drivers, i hope this will work.

following 2 services running under services tab, but i cant find my device in "device manager", pls help. i have iphone 4 ios 5.0.1 jailbroaken. i just wanted to transfer some photo to my pc, even itunes doesnt detect my iphone. is there any other way to do it(without mail) pls tell me.