Jailbroken iPhone that needs to be returned...
I have a jailbroken 3gs and used PwnageTool to upgrade to 3.1. I have noticed recently that my proximity sensor is not working. I've done everything but restore the device. My question is- do I need to do anything during the restore process, before I bring my phone in, so that I can still have the ability to jailbreak my phone again to 3.1?
I'm worried if I bring a jailbroken phone in they won't replace the sensor or repair / exchange the device.
Thank you in advance for any help.