Amazing guide, if I may add, there seems to be a way to add the cartridge art on the SNES games, but through a different injection software. Haven't quite figured it out yet due to time constraints, but will leave the guide I found here...
Does anybody know how to apply the Green tint filter to a GB Game Banner?
Some games when trying to load the info from the repository return an error message saying "Error! Unable to download image!".
For these games I ran the rooms, screenshotted the title screen and then added them...