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...

Hardware Hacker's PSA

Thread starter Nerdtendo
Start date Nov 8, 2019
Views 1,471
Replies 4
Likes 1

Nerdtendo

Your friendly neighborhood idiot

Member

Level 15

Nov 8, 2019

Target's Nintendo Switch Black Friday deal is probably the easiest way to get a brand new, unpatched unit. An HAC-001 model bundled with MK8 Deluxe for $300. It looks like Nintendo is trying to sift through their stock of units with worse battery life.

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The Real Jdbye

is birb

Member

Level 23

Nov 8, 2019

Nerdtendo said:
Target's Nintendo Switch Black Friday deal is probably the easiest way to get a brand new, unpatched unit. An HAC-001 model bundled with MK8 Deluxe for $300. It looks like Nintendo is trying to sift through their stock of units with worse battery life.

They're definitely going to be iPatched. But maybe you can get lucky and find one on 4.1.0.

Reactions: Alex1234 and Nerdtendo

Rahkeesh

Well-Known Member

Member

Level 12

Nov 14, 2019

Shouldn't they all be on 4.1.0? I thought they didn't start coming with later versions till Mariko.

ZachyCatGames

Well-Known Member

Member

Level 14

Nov 14, 2019

Rahkeesh said:
Shouldn't they all be on 4.1.0? I thought they didn't start coming with later versions till Mariko.

In America, yea. In other regions they came with higher firmwares as they released (I think they went up to 6.2.0, shortly after that Icosa production ended)