hi, i've had my jailbroken 3gs for the past year now and last night the screen suddenly began flickering. i'm currently running os4 on it. i attempted to take a photo of it using screen capture but the photo came out showing a normal screen. did a video of it for youtube hoping maybe someone can help= can any of you help? http://www.youtube.com/watch?v=7ulEmEj7-rk thanks!