Okay, I am also using an M3i Zero, running M3 Sakura M24 (the latest one), and I was also running into this problem. I did rename the latest dl "cheat.db" to "cheat_EN.db" and copied it over the default cheat_EN.db that came in M24. My problem now, however, is that that cheat.db doesn't have codes for, yeah, I'm gonna go there, Pokemon HG, (like we haven't had enough people flooding the boards with questions about this effing game).
Okay, no problem, so I'll just add them in manually, right? Well I tried to open the .db in r4cce and it's not recognizing that as a supported file type. I navigate to the SYSTEM folder and it shows me all the .dat's, but no .db's. Yes, I tried all possibilities on the drop down bar, none of them outline ".db" as a supported filetype.
So my question is, simply, what cheat code editor do I use to open and modify a cheat.db file? Again, r4cce (the program noted to use in the new cheat database thread) will not let me open a .db file.
Everything was going smoothly up until that point...
Thanks for any help guys!
EDIT: I do see that you can create a new cheat code list and save it as a .db, but I want to open my existing .db and add codes to that. Is this even possible? I feel like I'm going a little crazy...