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 fatal error has occured when running fusee.bin

Thread starter Jayinem
Start date Feb 14, 2024
Views 1,970
Replies 2

Jayinem

Well-Known Member

Member

Level 9

Feb 14, 2024

I had my Switch running for a long time maybe 8 months without rebooting because I used sleep mode. I just got a freeze and had to reboot but now I can't send the fusee.bin payload through TegraRCM to get back in. I believe I'm on 17.0. I went to the atmosphere page and tried different fusee.bin's but it's not working.

I do know my Switch would boot into Hekate I tried hekate_ctcaer_6.0.7.bin but it's just a black screen.

petspeed

Well-Known Member

Member

Level 9

Feb 16, 2024

Try holding the power button for 30 seconds, release and then power on again

Jayinem

Well-Known Member

Member

Level 9

Feb 16, 2024

petspeed said:
Try holding the power button for 30 seconds, release and then power on again

Thanks but my laptop is getting repaired so I didn't have the fusee.bin file so I tried to download it off atmosphere page I thought I was on 17.0 but I'm actually on 16.1 it was the incorrect fusee.bin file I was using. Now fixed.

Reactions: petspeed and BigOnYa