Hello guys, this is my first post here! I just got a MIG Switch card out of curiosity and I was tinkering with it. For those who don't know, it's used by placing XCI dumps as well as other game specific bin files in the sd card of the MIG Switch, and are obtained from the original cartridge by using an app like nxdumptool. Two of these bin files are mandatory to get the game to boot: Initial Data.bin and Certificate.bin. They stay the same for every cartridge of a specific game. Now, if you want to use an XCI dump from a shady website it's impossible to get it to work without those files. By using the Certificate.bin from another game it has no problem, but this does not count for the Initial Data.bin. So I looked for a way to obtain this Initial Data from an XCI file and read a bit of the XCI file documentation from switchbrew dot org. Here's what I understood so far: The Switch checks if the cartridge is valid by doing a challenge–response authentication on the Initial Data. The Package ID is contained both on the XCI and the Initial Data, on positions 0x110 and 0x0 respectively. The Initial Data hash is on the XCI at position 0x160. It is calculated by doing a SHA-256 hash on the full Initial Data content. So I was wondering, is there a way to to construct a functional Initial Data file starting from an XCI dump? I also tried a reverse approach by editing the Package ID in the Initial Data from another game, generating the Initial Data hash and putting it in the XCI file but is not enough to get the Switch believe it's a real game. Sorry if this may seem stupid but let me know what you think.

duckstation for Switch

catlover007 · 2024-04-22T04:06:40+00:00

duckstation is an excellent Playstation 1 emulator by Stenzek. It has a very good compabiility and it is quite performant. It also supports all kinds of enhancements such as high resolution rendering and PGXP which can lessen the "wobble" and...

Accidentally wiped my emunand

ctrlp

Well-Known Member

Newcomer

Level 4

Apr 6, 2023

Hi All, I have a launch day switch and I was trying to fix the emunand since it was corrupt and would sometimes crash my switch. In doing so it appears that I have wiped the emunand and now i'm not sure how to get everything running again. At this point if i've lost my saves then i'm fine with that, I did also have my nintendo account linked to it but I never went online with it after installing CFW. Is there a guide for this or could anyone help me please? Thanks in advance.

Post automatically merged: Apr 6, 2023

I checked my SD card and it's got a unformatted hidden partition in it what uses 29.16gb. And inside of it there is a emummc folder @ 32.1gb. I was hoping to restore but not sure I could. I remember using an option in hekate to overwrite the emunand. I did this a while back, probably about a year ago now.

Last edited by ctrlp, Apr 6, 2023

Accidentally wiped my emunand

Well-Known Member

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