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...

A little help creating a cheat file

trueicecold

Well-Known Member

Newcomer

Level 7

Feb 5, 2019

Hello all, please bear with me, since it's my first time trying to create a cheat file myself

So I had a look at AnalogMan's explanation on how to find the address needed to create a cheat file, but I'm still having a hard time making it work...
Game I'm trying for example is Rogue Legacy:

I found the HEAP address for my current game session:

I saw the MAIN address before it, so I tried calculating the offset from MAIN to the HEAP address (tried 0x5 from the end of the MAIN address, and 0xD from the beginning, since I wasn't sure from where I needed to calculate).

so I ended up with:

Code:

[Infinite Money]
540f0000 02730458
540f1000 00000005
740f0000 ffffffff

Code:

[Infinite Money]
540f0000 02730458
540f1000 0000000D
740f0000 ffffffff

and the code didn't work copying the txt file to my switch...

Can anyone shed some light on what I'm doing wrong? I'd really like to create cheat files for everyone

Thanks!

ROM Hack Question A little help creating a cheat file

Well-Known Member

Similar threads

Popular threads in this forum