M3 DS real, can't add cheats.

I want to open up cheats.db and modify it, because even the current version of cheats.db at that gbatemp website doesn't have it. However, I don't even know how to open it, let alone modify it! Halp!

You'll need a Cheat database editor. Try R4CCE, you can find links in the common issues topic.
https://www.romulation.org/forum/index.php?topic=1462.0

R4cce can't open the file. I've been searching for hours now.

http://gbatemp.net/index.php?showtopic=75347