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...

ROM Hack Check for updates/DLC

Thread starter Potter12490
Start date Sep 30, 2019
Views 3,301
Replies 4

Potter12490

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Newcomer

Level 1

Sep 30, 2019

What is the easiest way to JUST CHECK if my XCI/NSP on my PC ( I HAVE BOTH & TOOLS TO CONVERT, SO WHICHEVER IS EASIER ) have UPDATES & DLC? I can find ways to download. I just need to know what im looking for.

jajamundo

Well-Known Member

Member

Level 10

Sep 30, 2019

I use a Hombrew app called "HBG SHOP".

You can use this and download the DLC and Updates from a repository directly to your switch

Potter12490

Member

Newcomer

Level 1

Sep 30, 2019

Does that work if I am cdn banned? Will it work for xci on my usb hdd? Or only installed nsp.

Last edited by Potter12490, Sep 30, 2019

Potter12490

Member

Newcomer

Level 1

Oct 1, 2019

So I'm new to XCI, all I had was NSP so I used NSCB to convert to XCI. I am using SX OS & had no issues with my NSP files. Put XCI on USB HDD. Now going into the menu, my switch crashes when scanning games. I use NSCB to verify THE SAME GAME both nsp & xci, both said corrupt. The NSP installed & played fine. So are XCI more picky? Can I repair corrupt XCI?

Lacius

Well-Known Member

Member

Level 26

Oct 1, 2019

If you want to check for updates on your Switch, use HBG or TheBigPP.

If you want to check your NSP files on your PC for updates, use an old version of NUT server using an up to date title database.