shoot. i think i had similar problem. i used my old iPod cable with my old iphone 2g and it had the exact problem! cannot be charged or detected by pc at all (even in DFU or any other God Mode).

so now i got myself iPhone 3G and using the stock cable. but i notice everytime i plug my iphone to the usb port, whenever i touch the phone, i feel a lil bit of electricity shock (or static electric, i dunno). i mean it happens when my feet touching the ground (means i feel nothing when i lift my feet off the ground). is it normal?
btw i put my pc on the floor also.

This post has been edited by finch!: Apr 29 2009, 11:15 PM