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 Question latest firmware, latest Atmosphere, lots of corruption

Thread starter calibano
Start date Apr 28, 2021
Views 9,582
Replies 22

fille

Well-Known Member

Member

Level 5

Apr 29, 2021

for me it works now fine,some games have problems with installing,so bad nsp probably.

MaD_mAnIaC

In a mad world, only the mad are sane

Member

Level 9

Apr 29, 2021

I was using a file based atmos emunand and got lots of corruption on the internal memory too. Small games installed and played fine, big games corrupted easily or failed to install completely.
Changed the emunand to hidden partition and so far 0 errors and everything seems to be working fine.

Never had problems with sxos file based emunand, but in my case it seems atmos doesn't play fine with it...

_Sjakie

Active Member

Newcomer

Level 2

May 8, 2021

I have downloaded the deepsea package as well. a few questions about that:

- Do I need to add sigpatches manually, or is it complete with sigpatches ?
- What payload (file) do I need to use with TegraRcmGUI to boot my switch ?

As I had quite some issues with corrupted games, is there anything I need to take care of to prevent corruption ?

Last edited by _Sjakie, May 8, 2021