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.

mig switch not working/updating??

stickybit · 2024-03-28T19:59:51+00:00

just got my mig switch and followed instructions to the T to update it and all im getting is a red light and then a message saying cart not recognised, all im trying to do is update it to the latest firmware, it says it should flash blue when...

Debugging Switch using Yuzu?

Thread starter thethiny
Start date Nov 26, 2021
Views 4,393
Replies 4

thethiny

Well-Known Member

Member

Level 3

Nov 26, 2021

I am trying to develop IPS patches for Mario Odyssey but I have no way of verifying that they're working as intended (or if they're even loaded) in Yuzu. I know of JNoexes but that requires a real switch, but I don't want to do the debugging there as most often the switch is being borrowed by my siblings. Is there are way to develop IPS in Yuzu? I'm currently using IDA + IPS.

thesjaakspoiler

Well-Known Member

Member

Level 8

Nov 26, 2021

It seems to be possible according to this article :
https://yuzu-emu.org/help/feature/game-modding/

thethiny

Well-Known Member

Member

Level 3

Nov 26, 2021

thesjaakspoiler said:
It seems to be possible according to this article :
https://yuzu-emu.org/help/feature/game-modding/

This article doesn't talk about the debugging process which is what I am looking for.

124732956

New Member

Newbie

Level 1

Feb 23, 2022

Hi there, have you to debug switch using Yuzu ??

Imancol

Otak Productions

Member

Level 11

Feb 24, 2022

You only have a console that registers activity of the emulator (I don't know if it was more like Ryujinx). Or you can load the memory directly from the running emulator with some memory disassembler