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...

Hacking Question Corrupted backups on SD?

Thread starter Shoruk3n
Start date Aug 9, 2020
Views 718
Replies 2

Shoruk3n

Well-Known Member

Member

Level 4

Aug 9, 2020

Hey all,

So a few of the game backups on my SD card are suddenly corrupt and will not launch, but not all of them. I'm wondering if this is symptomatic of something bigger, like the whole card is card is about to die, or if somehow just those files got tweaked. Anecdotally, it seems like the games that I play frequently are just fine, but the ones that I haven't are often corrupted. I'm on SX OS. Anyone have a similar issue before?

Last edited by Shoruk3n, Aug 9, 2020

Draxzelex

Well-Known Member

Member

Level 23

Aug 17, 2020

Shoruk3n said:
Hey all,

So a few of the game backups on my SD card are suddenly corrupt and will not launch, but not all of them. I'm wondering if this is symptomatic of something bigger, like the whole card is card is about to die, or if somehow just those files got tweaked. Anecdotally, it seems like the games that I play frequently are just fine, but the ones that I haven't are often corrupted. I'm on SX OS. Anyone have a similar issue before?

How is your SD card formatted?