If anyone's taking the dust of their Super Metroid, but has since lost the manuals, Nintendo officially hosts it as PDF
#SNES #GBA #retrogaming #metroid
They host both JP & USA versions, by the way.
Also, I do not know the path within their site, but they were indexed on DuckDuckGo:
Thought it would be of interest given the recent port. Also why the GBA hashtag at the beginning.
Also worth noting and reiterating, you need a legal copy of the game if you want to try the port. What counts as legal depends on your country (looking at you, DMCA), so do your research.