Hacking m3 perfect doesn't save anymore...

[triassic911]

Hi. My m3 perfect (slot-2) Doesn't seem to wanna save anymore. What I mean by this, is that the rom doesn't wanna seem to read the .dat file that corresponds to it. Recently I tried Pokemon Platinum in Japanese and When I press save on the menu, it just hangs. Also, When I delete a game (through m3 game manager), it doesn't delete the .dat file for it. Also, when I want to go into the saver manager (by right-clicking a game) to overwrite its current save file, nothing shows up! I recently bought a new sd card (Sandisk, old one was Ultra) and my m3 still does the same thing. So my question to you guys is, how would I fix this? Thanks.

 

[Garo]

I don't know anything about the m3 game manager, but you should go in and manually handle stuff.

And what you're describing sounds like a system file error, try deleting and replacing your system folder?

Hopefully you have it backed up.

 

[g6team]

Could be a battery issue. Try changing it and see if that will solve the issue.

 

[triassic911]

Thanks for the replies. I don't see a battery in the m3 from the outside, but I will open it up and check. As for manually managing games, I wouldn't know how to create a .dat file for a game.

 

[m3rox]

You likely have too many save files in your nds save folder (I forget the exact name, something like NDSSave or similar).

Check how many are in there, I believe 200 is the limit before the M3 perfect stops saving properly.

 

[triassic911]

You likely have too many save files in your nds save folder (I forget the exact name, something like NDSSave or similar).

Check how many are in there, I believe 200 is the limit before the M3 perfect stops saving properly.

I don't think a 2gb sd card can hold that much! I know I didn't have more than 200. I didn't even have more than 30 or so.

Anyway, I tried googling on how to manually create .dat files but no luck. If someone could show me how, I'd really appreciate it.

 

[Maikel Steneker]

You likely have too many save files in your nds save folder (I forget the exact name, something like NDSSave or similar).

Check how many are in there, I believe 200 is the limit before the M3 perfect stops saving properly.

I don't think a 2gb sd card can hold that much! I know I didn't have more than 200. I didn't even have more than 30 or so.

Anyway, I tried googling on how to manually create .dat files but no luck. If someone could show me how, I'd really appreciate it.

You can get a few here: http://linfoxdomain.com/nintendo/ds/dl.php...k_savefiles.rar

 

[triassic911]

Thanks. I'll test to see if it works this way.

 

[triassic911]

It seems my M3 isn't recognizing save files at all.

 

[Shadow-Zero]

You likely have too many save files in your nds save folder (I forget the exact name, something like NDSSave or similar).

Check how many are in there, I believe 200 is the limit before the M3 perfect stops saving properly.

Google got me here, just wanted to add my recent experience. The max .dat files the M3 can read/recognize seems to be true yeah (think I read it before, but it's all SO long ago )

I tried to get my GBA Yu-Gi-Oh .dat file from my primary on my secondary M3 Perfect/SD card so I could play with a mate. I renamed the primary.dat file to .dat.new and copied it to the second M3/SD card, where I renamed the already existing Yu-Gi-Oh .dat file to .dat.bak.
Then I got the message it couldn't find the .dat file:

Warning! GBA save game already exists on this card, but autosave cannot be found. Backup failed. Press A to continute

Manually looking for the .dat file in the M3 showed me both the .dat.new .dat.old could not be found! So apparently the M3 works on modified date of the file (and not alphabatically).

Anyways, I had some frustrating trial and error testing, but once I read about the 200 .dat files limit, I moved some .dat files and then my new Yu-Gi-Oh .dat files appeared in the M3 and I could load the backup with everything unlocked.

Reading gbatemp.net/threads/m3-lite-perfect-not-creating-proper-gba-save-dats.65350/, I understand there's no known method of using more than 200 .dat files, or is there?
I have 260 GBA games on 1 SD now. I have to make a choice to split it in 2 SD cards, or make a dummy .dat file to which I auto-write games to which I don't really need saving for, or just disable auto-save... (not my preference)