ninfs VS GodMode9

If it was ever jailbroken, check your backups and SD card for files named movable.sed or essential.exefs (which contains a copy of movable.sed). If you can get the console to boot just far enough to load Godmode9, you can obtain this. (Even with broken screens -- you just need another console to play along on or someone writing down the button sequence because you're flying blind.) Either of these files can be used to decrypt the saves stored on the SD card using ninfs.

If you have the movable.sed file from your old 3DS (or essential.exefs, which contains this), then you can use ninfs

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Thank you so much for the info. As you said, I got the same answer on discord but at least I can try to figure out my nand backup with ihaveamac/ninfs

You can try ninfs but since the NAND is encrypted, it requires that you have dumped your boot9.bin as well.

You can find movable.sed at bytes 0x600-0x73F in essential.exefs. It’s also contained at 0x800-0x93F in a GodMode9 NAND backup if you have one. With this, you can use ninfs to browse the decrypted SD contents and back up your games and saves (you will need the file boot9.bin, which you might have backed up as _boot9_##.bin, but it’s the same for all systems so you can back it up from another 3DS if needed). I think ninfs can also open essential.exefs and get movable.sed for you. You can also use ninfs to browse a NAND backup.

Alright, so I've clearly got an extremely thick skull and when I was trying to decrypt a .3ds file, the decryption tool (https://github.com/ihaveamac/ninfs/releases) somehow made a new drive on my computer, which I am now stuck with... Does anyone know how to get rid of it?

ninfs works pretty well, on Windows you'll also need OSFMount to mount the disk images.

You can use ninfs to mount .3DS and dump romfs.bin on your PC. https://github.com/ihaveamac/ninfs

GodMode9 is basically a Swiss army knife file browser for the 3DS. In fact, there's also a version for NDS consoles as well. After going through the guide, systems normally continue to boot using the boot.firm Luma3DS file on the SD card root -- there's no reason to remove it. If people followed the big guide, they should not run into a situation where they cannot boot without an SD card inserted. 🤷‍♂️ GodMode9 can dump 3DS and NDS cartridge data, install .cia files, among many other things. It's an extremely important tool to have!

Was it the newest version of god mode 9 you used? Maybe try replacing the payload files with one of the older versions here?

Download the latest gm9 zip: https://github.com/d0k3/GodMode9/releases/latest

That is GodMode9, a powerful full-access file browser for the Nintendo 3DS. Did your console boot to that when you turned it on? What happens when you press START?

Download https://github.com/d0k3/GodMode9/releases/download/v2.1.1/GodMode9-v2.1.1-20220322194259.zip

I found a {thread from a year ago with about the same issue](https://github.com/d0k3/GodMode9/issues/694). They found that the issue was the system was brand new. I've been using this same 3ds since 2015. I doubt that's it. I did just buy a new SD card, but I copied everything over to my new one.

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