Hi there. You only need to download the first file (.gz) to install emuelec for the first time and burn it to a microSD card. I am attaching instructions.
the second file (.tar) only to update manually if you already have emuelec installed.no need to download. is correct ;emuelec has an auto-update function but sometimes it may fail, that is why the update file is included in each launch.
you know if the new emuelec support GameCube games ?
because i see a YouTube video that someone played GameCube games on emuelec
and i remember before a long time ago that i installed an old version (i think it was 3.8) it not support GameCube
It is partially supported, … a standalone dolphin emulator was added BUT some games may not work or low performance. You must create the roms / gamecube directory to host the roms, also you will have to map your gamepad manually to make it work. I repeat, just experimental