I have just bought a M3i zero flash cart, and I was following the instructional video found on gbatemp. However I cannot fit the firmware update cable into the flash cart. I have made sure that it is in the correct orientation and slot. The cable will not sit flush I push it in as far as it will go without bending the cable. But I have never had any flashing or solid lights from the card. I have tried multiple pc's and usb's which makes me wonder if it is a problem with either the cable or card itself. I was wondering if anyone might have suggestions or possibly any fixes for this issue.