(07-31-2019, 02:17 PM)Malkierian Wrote: It looks like it's possible that, after the first load, the banner information is stored on the Wii's NAND memory, which means, for modding it in Dolphin, you'd have to go to your "[Dolphin Directory]\Wii\title\00010000\[Game ID]\data" folder, to find the banner.bin that is loaded when the disc is put in (and I think this would also change the banner/icon that is used in Dolphin's game list).
This would indeed change the banner that's used in Dolphin's game list, but it won't actually change anything in the Disc Channel. The Wii Menu only uses this banner.bin file when displaying the save data management screen.