Compatible with Wii. I think it was v1.14b, but yeah it sucks that you have to go through all of these things just to play imports.
There is a way to burn a bootdisc with action replay on it, that way you only have to swap discs once like normal.
Also you can boot USA games from GCOS, but maybe the update isn't worth all the work.
version 1.14b is the older version of action replay with the old interface, it looks like this:
version 1.0E is the "compatible on the Wii" version which is the one i have which looks like this:
there is also a very old version 1.06 that i have also and they are all native PAL it would be very interesting which ones don't and do work but i won't be updating to find out unfortunately.
GCOS -> USA Game works exactly as it would when you boot with Freeloader, so I don't see the problem...
i don't like gcos interface, there is no action replay support and gamecube games have to be on a multi disc to work, all my gamecube games are on mini dvd's (excluding the legit games)
I don't think games have to be on a multi disc to run using GCOS. You can put in any normal game or a backup game and it'll detect and boot it fine. I have to use it for some of my NTSC games that dont boot normally.