I want to change the copyright date on the title screen of Super Mario Bros. 3 to fit its North American release date of 1990. I already know what the Japanese release date of 1988 is, as is reflected by what is currently on the title screen of the ROM.
I've tried every trick in the book I could think of, in this case using every utility available for SMB3, including the title screen editor. I know it has to be possible to edit, as I remember seeing the title screen date changed from 1988 to 2003 or 2004 or something like that for someone else's ROM hack.
Would the best way to edit the date be through one of those utilities found on this site, or would it be through a hex edit? If it's the latter, which I'm currently suspecting, please let me know what bytes need to be changed and the address they are located at.