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

duckstation is an excellent Playstation 1 emulator by Stenzek. It has a very good compabiility and it is quite performant. It also supports all kinds of enhancements such as high resolution rendering and PGXP which can lessen the "wobble" and...

Hacking ChoiDujourNX help!

Thread starter MSearles
Start date Sep 15, 2020
Views 2,616
Replies 2

MSearles

Well-Known Member

Member

Level 11

Sep 15, 2020

I was using ChoiDujourNX to update my firmware to 10.1.0 and I chose FAT32 instead of exfat. Now, when I boot using SXOS, nothing loads and my Switch is asking me to install some sort of SD card update. What do I do to fix this? I appreciate any help. Thank you!

Edit: Got it, thanks. If I could delete this thread, I would.

Last edited by MSearles, Sep 15, 2020

StealthC

New Member

Newbie

Level 2

Sep 15, 2020

You can use a card with fat32 format with just the files needed from current card to boot up cfw and install the firmware in exFat. After that you can use the exfat card.

Draxzelex

Well-Known Member

Member

Level 23

Sep 16, 2020

MSearles said:
I was using ChoiDujourNX to update my firmware to 10.1.0 and I chose FAT32 instead of exfat. Now, when I boot using SXOS, nothing loads and my Switch is asking me to install some sort of SD card update. What do I do to fix this? I appreciate any help. Thank you!

Edit: Got it, thanks. If I could delete this thread, I would.

Report it to the moderators then.