edit: nevermind, got it working. i just didn't know there was a new r4 firmware beyond 1.18 =P
i haven't looked into it much yet, but maybe you guys would know...
i have pokemon black and white roms, US version (although apparently EU version is identical), supposedly the anti-piracy stuff is already disabled...but when i load both i just get a white screen and nothing happens.
i tried putting YS menu on, which was what allowed bowser's inside story to work, but that didn't help either. when i do that it gives me a weird "rom could not load" error.
i have an original R4 SD...apparently it works on R4i SHDC but that's different...