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...

Need help extracting/ripping sprites from Touhou Spell Bubble!

kirbikomeiji

New Member

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Level 1

Jul 26, 2023

Exactly as the title says! I've been trying to rip sprites from this game as a project for about a year now and I'm basically at the end of my rope.

My method for extracting this game is:

Using nxdumptool to dump the game's ROMfs
Moving the ROMfs from my SD to my PC
Extracting the files using both AssetStudioGUI and Asset Ripper

The problem I'm having is that the game I'm trying to rip from has had updates come out over its lifespan, of which contains several characters not included in the base game. Attached to this post are two images: the first of which was extracted from the base game using AssetStudioGUI, while the second was extracted from the updated game. The second image seems to be similar to several instances I've seen of swizzled images due to the game being Switch exclusive.

I've been trying to find out for too long why the game does this and no amount of unswizzling methods have helped me at all. I'm wondering if it has to do with the update itself, since whenever I've tried opening the ROMfs, Asset Studio always gives me a set or errors shown in the third attached image. These errors don't show up when I view the base game in it.

I really would like some help getting this done properly. I don't have a very deep knowledge on game dumping and it would be really cool if someone who knows more than me could help out!

Hacking Need help extracting/ripping sprites from Touhou Spell Bubble!

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