Intro
Using the Homebrew Launcher, we can backup any save, whether on a physical cartrage, or downloaded from the EShop. The editing of these saves depends on the game. Some games have dedicated editors, some do not. If they do not have an editor for your chosen game, you may be able to edit them with a Hex editor, but, it could be risky. The chance of Brick is next to none, as in zero, but with no guarantee for complete messing/stupidity.

First of all, set up Tubehax, and if you can, Ironhax.

Tubehax
Smealum's guide is very good, and can be found here, along with all the necessaries.
I recommend following that guide.
REMINDER/NOTE: If you have setup Tubehax/Ironhax at launch, you may need the newer boot file which can be found here. If in doubt, download it.

Savedata Manager
Now, you need to download save data manager from here. Extract it, using your favourite extractor, to the 3ds SD card ensuring that the binary is located in a directory in the 3ds directory. For example; My SD card goes like this on a Windows computer.
D:/3ds/savedata/
With the final *.3dsx file located in there.

Backing up, Editing, and Injecting
This part must be followed carefully, failure to do so may result in a broken save. The absolute crucial part is to NOT open the game during the time between backup in injection. Do NOT open the game. Don't do it.

1. Launch up the Homebrew Menu through your preferred means. (Ironhax, Tubehax, or Ninjhax)
2. Select the Savedata manager and confirm the choice with A.
3. Using the DPad, change the selection of the game to the one you wish to backup.
4. Press A to backup. NOTE: Some people have reported broken screens. No idea, sorry.
5. Press X to exit then power off the 3ds. DO NOT START THE GAME TO CHECK IT HASN'T BROKEN IT.
6. Insert into your computer and make edits using an editor, or manually. I'll link to some editors below. NOTE: The saves are located in the root of the sd card in a directory.
7. Place the updated save on your SD card. In the same directory, ensuring that there are no other saves present. You have one shot at the injection!
8. Place the SD card into your 3DS, boot up the 3DS, start the Homebrew Menu, go into the save manager, and select the same game. Hit B to Inject.
9. Press X to exit the save manager, press START in the Homebrew Menu, and press A to restart.
10. Boot up the game.

Why should I not open the Game?
Some games use a value in the game save which changes every time the game saves. This value is also stored on the SD card. If these values are not the same, the game says the save is corrupted or a similar error. When you load up the game after backing up, the numbers do NOT match, and so if you restore the save, it will reject it.

Editors

EDIT: A list of save editors has been made by someone: Here
The list that used to be here will now be removed in favour of that one.

End Note
I wrote this, and I'm human, so I may have made a mistake. Please point it out.

 

[didix16]

https://gbatemp.net/threads/monster-hunter-4-save-editor.394163/ - You can add my editor of MH4

 

[GoldenHamburger]

The link to the MH4 editor leads to a thread called Life.

 

[didix16]

lolz.. Not for me...

 

[yodamerlin]

The link to the MH4 editor leads to a thread called Life.

Fixed. I failed to copy the last number, so the ID was out. Why put the title in the address if only the ID matters?

 

[QCLasky]

Intro
Using the Homebrew Launcher, we can backup any save, whether on a physical cartrage, or downloaded from the EShop. The editing of these saves depends on the game. Some games have dedicated editors, some do not. If they do not have an editor for your chosen game, you may be able to edit them with a Hex editor, but, it could be risky. The chance of Brick is next to none, as in zero, but with no guarantee for complete messing/stupidity.

First of all, set up Tubehax, and if you can, Ironhax.

Tubehax
Smealum's guide is very good, and can be found here, along with all the necessaries.
I recommend following that guide.
REMINDER/NOTE: If you have setup Tubehax/Ironhax at launch, you may need the newer boot file which can be found here. If in doubt, download it.

Savedata Manager
Now, you need to download save data manager from here. Extract it, using your favourite extractor, to the 3ds SD card ensuring that the binary is located in a directory in the 3ds directory. For example; My SD card goes like this on a Windows computer.
D:/3ds/savedata/
With the final *.3dsx file located in there.

Backing up, Editing, and Injecting
This part must be followed carefully, failure to do so may result in a broken save. The absolute crucial part is to NOT open the game during the time between backup in injection. Do NOT open the game. Don't do it.

1. Launch up the Homebrew Menu through your preferred means. (Ironhax, Tubehax, or Ninjhax)
2. Select the Savedata manager and confirm the choice with A.
3. Using the DPad, change the selection of the game to the one you wish to backup.
4. Press A to backup. NOTE: Some people have reported broken screens. No idea, sorry.
5. Press X to exit then power off the 3ds. DO NOT START THE GAME TO CHECK IT HASN'T BROKEN IT.
6. Insert into your computer and make edits using an editor, or manually. I'll link to some editors below. NOTE: The saves are located in the root of the sd card in a directory.
7. Place the updated save on your SD card. In the same directory, ensuring that there are no other saves present. You have one shot at the injection!
8. Place the SD card into your 3DS, boot up the 3DS, start the Homebrew Menu, go into the save manager, and select the same game. Hit B to Inject.
9. Press X to exit the save manager, press START in the Homebrew Menu, and press A to restart.
10. Boot up the game.

Why should I not open the Game?
Some games use a value in the game save which changes every time the game saves. This value is also stored on the SD card. If these values are not the same, the game says the save is corrupted or a similar error. When you load up the game after backing up, the numbers do NOT match, and so if you restore the save, it will reject it.

Editors

• Pokemon
• Pokemon Shuffle
• Pokemon Rumble World
• Rune Factory 4
• Fire Emblem: Awakening (Location only)
• Monster Hunter 4

There are probably many more, as I have not listed them all, just those I could find fast. Loads of them get released (or posted) here.


End Note
I wrote this, and I'm human, so I may have made a mistake. Please point it out.

Nice guide.
You can add more editor to description like, smash bros editor and acnl RAM editor online (or NLSE)

 

[yodamerlin]

Nice guide.
You can add more editor to description like, smash bros editor and acnl RAM editor online (or NLSE)

Never used those editors, do you have links to them?

 

[samiam144]

Never used those editors, do you have links to them?

NLSE (sorry no thread, I haven't searched though)
marc_max's ACNL online editor
One of the Smash Bros editors (I can't find the other one I use)

These are all meant for Savedatafiler but if I understand correctly, Save Manager has almost the same format right?

 

[SomeGamer]

NLSE (sorry no thread, I haven't searched though)
marc_max's ACNL online editor
One of the Smash Bros editors (I can't find the other one I use)

These are all meant for Savedatafiler but if I understand correctly, Save Manager has almost the same format right?

Yes, they have the same format. BTW, could you send me the SSB editor you're using?

 

[samiam144]

Yes, they have the same format. BTW, could you send me the SSB editor you're using?

Found them!!

Gudenaurock's editor
Flurry's editor
I find that the equipment editing works perfectly when I use them together. I use Gudenaurock's to create and edit the equipment, then flurry's to go over whatever didn't 'stick".

Haven't used them in a while though.

 

[GlitchyGoats]

Now that I've backed up my animal crossing save save how do I edit it? I'm using this method.

 

[yodamerlin]

Now that I've backed up my animal crossing save save how do I edit it? I'm using this method.

This forum post contains info.

 

[GlitchyGoats]

This forum post contains info.

That doesn't really explain anything, and it's not made for this new method. I used the online acnl map editor and I downloaded the garden.dat but I don't know how to inject it into the game.

 

[yodamerlin]

That doesn't really explain anything, and it's not made for this new method. I used the online acnl map editor and I downloaded the garden.dat but I don't know how to inject it into the game.

I'll have to try it myself in a bit.

 

[didix16]

I'm just trying to use the save manager but when I open it, it just shows System Settings to select like a title and If I select then a black screen with this message appears:

Get_fs:USER handle 0x0
FSUSER_Initialize: 0x0
Open archive 0xC920454F
Could not access the savedata archive! Press X to exit.

What could be the problem?

 

[SomeGamer]

I'm just trying to use the save manager but when I open it, it just shows System Settings to select like a title and If I select then a black screen with this message appears:

Get_fs:USER handle 0x0
FSUSER_Initialize: 0x0
Open archive 0xC920454F
Could not access the savedata archive! Press X to exit.

What could be the problem?

When the target selection appears try pressing left or right on the plus control pad!

 

[didix16]

When the target selection appears try pressing left or right on the plus control pad!

OH thanks! XD. Now I selected MH4, but after launch the app, It crashes and freezes at black screen

 

[QCLasky]

Now that I've backed up my animal crossing save save how do I edit it? I'm using this method.

enter here and load the garden file. it is easy to use, edit whatever you want and save. then just replace the garden file and restore the save using the save manager

 

[Chrome Electlroz]

Why do i keep getting a red screen at the bottom when taping the save manager;tried in different consoles but i keep getting the same results.

 

[didix16]

No matter what I do, I allways get black screen freeze after launch save manager