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.

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Hacking RCM jig taht fits in the game cartridge slot?

Thread starter DontForgetLuigi
Start date Apr 30, 2020
Views 2,266
Replies 6

DontForgetLuigi

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Level 3

Apr 30, 2020

Hi,

I just keep loosing my RCM jigs and altough i'm really looking forward to the DragonInjector (yes, i know that DI is more than just the jig) - i was wondering if anyone have seen a RCM jig that fits in the game cartridge?

ultra2extreme

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Level 1

Apr 30, 2020

why not just solder mod the controller? its easy

Reactions: NekoMichi

logandzwon

Well-Known Member

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Level 3

Apr 30, 2020

https://www.reddit.com/r/SwitchHacks/comments/fp03y3/i_designed_an_rcm_jig_that_slips_into_the/

Reactions: DontForgetLuigi

DontForgetLuigi

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Newcomer

Level 3

May 1, 2020

Cool! Now i just have to figure out how to print one!

CymraegAce

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Level 5

May 1, 2020

DontForgetLuigi said:
Cool! Now i just have to figure out how to print one!

Local libraries/resource hubs are often a good place to find cheap, useable 3D printers...

DontForgetLuigi

Member

Newcomer

Level 3

May 1, 2020

I wish somebody just sold theese on ebay or amazon. That would have made it that much easier.

roden

Well-Known Member

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Level 5

May 2, 2020

Just mod your joycon, i havent used a jig once, 10k resistor mode and sorted.

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