.. as long as the tip is fine enough, and that you first apply some liquid flux to the solder joint before you heat it, AND you hold down the header as you solder.

This one is a standard repair for carsupport, so I can handle it for you if needs. The standard response to the "Not Found" message is FIRST try if a new cable fixes the problem, THEN if it doesn't, it will probably need soldering. If you are suffering from this, then just mail carsupport.