Why is it impossible to flash without a usb? I've never understood this. I'm pretty sure you can flash just the kernel without a usb, because I think I've done it.
I tried to plug it when it's off. I see the very dark nokia logo, and the small usb logo, it's vibrating once, but nothing appears on the computer side. Ubuntu doesn't see it, and XP says the usb device is not fonctionning correctly and ask me if I want to solve the problems. With my new cable, it's the same, except that it's charging on the usb while still not mounting on the computer side.