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.

duckstation for Switch

catlover007 · 2024-04-22T04:06:40+00:00

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Fatal error: [NXBOOT]: Unable to identify package1!"

Thread starter carnage781
Start date Feb 10, 2022
Views 1,504
Replies 2

carnage781

Well-Known Member

Newcomer

Level 4

Feb 10, 2022

I updated my Switch using Daybreak to 13.0.0

Now getting this error message on a black screen. Replaced the files with the newest Atmosphere and tried again still won’t work. I replaced the sigpatches also. Any help would be appreciated. Haven’t done this in awhile

Thanks all

gotsugua

Member

Newcomer

Level 1

Feb 10, 2022

Hi!

Have you update Hekate? There's special instructions about updating from
Atmosphere lower than version 1.0.0 - it's on their release notes, but I can't post the link don't know why.

Enviado de meu SM-G780G usando o Tapatalk

Draxzelex

Well-Known Member

Member

Level 23

Feb 17, 2022

carnage781 said:
I updated my Switch using Daybreak to 13.0.0

Now getting this error message on a black screen. Replaced the files with the newest Atmosphere and tried again still won’t work. I replaced the sigpatches also. Any help would be appreciated. Haven’t done this in awhile

Thanks all

Don't replace the files. Delete the old ones then put the new ones on the SD card.