OCDM stands for Online Course Database Manager​

Features*:

• import and export courses, both** 3DS and WiiU
• cryptofix saves (if the game marked your save as "corrupted")
  • Note: this will overwrite the LockoutID in your courses, not in the save file, so please be fair and don't reupload others' courses
• make/apply save snapshots (exports all files which are used in the save)
  • Note: please format your save data before restoring your save otherwise the game could mark your save as "corrupted", and this one is not cryptofixable
• browse SMMDB
  • download courses
  • discontinued

*: these features are in the latest build at the time of editing this post, so functionality in the public build could differ
**: due to differences in the 3DS and the WiiU version, importing a converted course file on a foreign platform could crash the game on loading the course

Spoiler: Video

Spoiler: Screenshots (development history)

Spoiler: Totally unrelated stuff

• Lua stuff (Pastebin)

[Download] (not supported anymore)​

 

[Sono]

Hi maybe this isn't the right place to ask, but I thought maybe this tool could help me? I'm trying to fix my son's save data. I'm not sure how this happened, for some reason when starting Mario Maker, he gets this error about the software using an SD card not paired with the system. Then it wants to re-create the ext data or it won't let you boot the game.

I have his extra data backed up with checkpoint, but restoring them just causes the error to reappear. I tried using OCDM to create a snapshot and then re-import one or two of the courses on a fresh save, but as soon as you load course bot it says the level data is corrupt and removes them.

I'm the one who hacked his system and set it up years ago. He knows only enough to play the game, so I highly doubt he himself has done anything to corrupt his save data so I'm really puzzled as to what could have happened to his levels. He'll be crushed if he loses them all, but I don't know enough about how this works to fix it beyond what I've already tried.

Sorry to bother you guys. I know this might not really be the right place, but my searches led me here and I had to ask.

Yup, this is the correct plate.

Damn... I never implemented the savefile restore >.<

Do you need the savefile itself? With unlock progress and such. Because if you don't need it, you could just re-import the courses.

If you need the savefile, then I'm afraid that I still did not figure out how to pair it to a new system :/
I'll add it to my queue, but don't expect it done in months.


If you only need the courses then you need to create a new game, create a dummy course, save it, exit the game, and *then* try importing the courses one-by-one.

 

[AustNerevar]

If you only need the courses then you need to create a new game, create a dummy course, save it, exit the game, and *then* try importing the courses one-by-one.

I did try to do that, but upon loading the game it just tells me the courses are corrupt and removes them completely.

I tried restoring save backups using Checkpoint, but that didn't really help. I was mostly hoping someone here had encountered a similar issue.

 

[Kwyjor]

I'm the one who hacked his system and set it up years ago. He knows only enough to play the game, so I highly doubt he himself has done anything to corrupt his save data so I'm really puzzled as to what could have happened to his levels. He'll be crushed if he loses them all, but I don't know enough about how this works to fix it beyond what I've already tried.

Your SD card might be failing. SD cards unfortunately fail suddenly with alarming frequency and can cause all sorts of mysterious problems.

Connect the SD card to your PC, copy everything off the SD card with Roadkil's Unstoppable Copier, format the card according to https://3ds.hacks.guide/formatting-sd-(windows) , test the empty card with https://3ds.hacks.guide/h2testw-(windows).html, and copy everything back if the test is okay. If the test fails, you can still copy the files to a new card.

If you're really lucky, this might just solve the problem

 

[AustNerevar]

Your SD card might be failing. SD cards unfortunately fail suddenly with alarming frequency and can cause all sorts of mysterious problems.

Connect the SD card to your PC, copy everything off the SD card with Roadkil's Unstoppable Copier, format the card according to https://3ds.hacks.guide/formatting-sd-(windows) , test the empty card with https://3ds.hacks.guide/h2testw-(windows).html, and copy everything back if the test is okay. If the test fails, you can still copy the files to a new card.

If you're really lucky, this might just solve the problem

I did try copying everything to another card thinking this might be it, but I just did a simple copy/paste. I'll try the utilities you linked.

 

[Sono]

I did try to do that, but upon loading the game it just tells me the courses are corrupt and removes them completely.

I tried restoring save backups using Checkpoint, but that didn't really help. I was mostly hoping someone here had encountered a similar issue.

Use OCDM, not Checkpoint. The files have pairing data in them, it will lie to you that they are "corrupted". OCDM uses the hidden course220 file to re-pair the courses you import.

 

[Kwyjor]

I did try copying everything to another card thinking this might be it, but I just did a simple copy/paste. I'll try the utilities you linked.

Oh, well, unless there were weird messages when you did the copy-paste, then using Unstoppable Copier isn't going to make any difference. Not much point in using h2testw either.