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...

ROM Hack Question Super Mario Odyssey - Custom Level Concept Ideas?

Thread starter A_Nintendo_Nerd
Start date Jul 30, 2018
Views 1,774
Replies 3

A_Nintendo_Nerd

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Newbie

Level 1

Jul 30, 2018

Hello everyone,
Just looking for any ideas for hard concepts of sections to put in a custom level that I’m currently creating for Super Mario Odyssey. The level, which is about 40% finished, takes place in the Darker Side, and I’m planning to make it more lengthy than some of the custom levels that are out there currently. Thanks!

Safir5951

New Member

Newbie

Level 1

Jul 30, 2018

Hi I have not much idea for you by cons I would be interested on how to modder game on switch if someone would publish a tutorial with the basics on the forum it would be cool

A_Nintendo_Nerd

New Member

Newbie

Level 1

Jul 30, 2018

Safir5951 said:
Hi I have not much idea for you by cons I would be interested on how to modder game on switch if someone would publish a tutorial with the basics on the forum it would be cool

Well, depends on what game you are modding, and sorry, can't really tell you that here... Really, all I know anyway is that you need to have an extracted .xci file of the game you want to mod with, which you can find tutorials on how to accomplish on YouTube.