I've seeing this very issue on a japanese wii
yet on my standard one I see the button where I can switch in the middle
version 1271 too so that should be new enough
its dumb that you have to go back to OLDER versions to get these things to work
my Project+ loader on a japanese wii refuses to work right because of the same error...yet it boots from USB loader GX just fine after doing all the install steps
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi