So I ran with another kind of issue this time, I formatted my mini-sd card to Fat32, then I proceeded to insert all the steps necessary and I ran the homebrew, now it appears that I can select runner.gba! I did that, and now another problem appears, it goes from (LOAD...COPY...OK), now the upper screen that used to be red now is now white, but...it doesn't load nor anything happens from there
I tried with two games, both being Yoshi's Island and Sonic Advance 3, since I thought the latter doesn't requires SRAM patching to boot, but even so I wasn't able to get anything noteworthy, I switched my mini-sd card to another, and then yet another problem happens in which I can't select anything!
Haha, what a bad luck I have with this homebrew, it seems to be mostly a problem regarding either my SD-cards or the Flashcard itself, sorry for the inconvenience