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...

Editing the Trainer Icon image via PKHex for Pokémon Scarlet/Violet

quantumboy

Casual Hacker, Avid Dreamer

Member

Level 5

Dec 20, 2022

In Pkhex when you open a save from scarlet or violet and go to block data there is an object block for trainer icon, *Object KPlayerTrainerIcon.
any way when dumping the block I have viewed it and several different versions of it from different saves I made with hex workshop
here's what I have figured out, but I am still at a loss on a few aspects, and would appreciate any one joining me in the experimentation.

the image aspect of the block is from byte 0 up to 6200 (in HEX addresses)
each pixel seems to be represented by 8 bytes, which is not a image format I am familiar with
when making all bytes in a pixel 00 I get black
when making just byte 0 for each pixel FF and rest 00, I get Blue
when making just byte 1 for each pixel FF and rest 00, I get Yellow
when making just byte 2 for each pixel FF and rest 00, I get Black
bytes 4,5,6,7 seem to have to do with some kind of of transparency or something
no idea what byte 3 does

This doesn't seem to be any kind of RGB or RGBA, HSV, or any color system I can figure out. I suppose through trial and error I can figure out some sample color codes, and eventually make a primative image editor, but

EDIT:

turns out the first two bytes are actually 16bit color, using BGR 5, 6, 5 bits layout similar to rgb565
getting closer....

EDIT2:

the bite layout is actually BRG 556, and the image is not square I am using a mine craft cicle generator to attempt to fit it properly but my pixel count is off by less than 10

Last edited by quantumboy, Dec 21, 2022

Hacking Editing the Trainer Icon image via PKHex for Pokémon Scarlet/Violet

Casual Hacker, Avid Dreamer

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