It's undetermined, but often times just changing the manufacturer ID makes a Unique ID work correctly, which is why I made SAK to allow users to change all the bits "to order", so to speak. If you're encountering errors, change the manufacturer until it works. Be sure to button-cycle the cart after making changes to reload the header.I was having issues because I didnt re-load the template after changing. Which is why I got a little frustrated lol.
Also, even though some of the games run now with Macronix as manufacturer, using a different header and macronix as the manufacturer gave me error online.
Could headers have any specific connection to the manufacturer?