aren't all Wii "RVL-001" ?
I thought the number was a code for the product (console 1, wiimote 3, nunchuk 4, classic 5 (all classic, even pro is 5), Mplus 25, wimmote+ 36, etc.) not the build revision. maybe I was wrong all along
I also don't see any difference with any games on my 4k component. that's why it's off and there's an option instead of forcing it by default. some games don't like it (Prince of persia for example).
Also, you don't need to restart the loader after changing a value in the settings, it's used right away, except for the "loader's IOS" option which is not reloaded automatically. all others don't require a reboot.
the 480p fix option only affect the games, not the loader itself. the menu name (loader's settings) is confusing, the loader's interface options are actually in the GUI menu. loader's settings are for things loaded by the loader (what you launch launch).