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.

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

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Homebrew Can't launch MH Rise

Thread starter Natillax
Start date Aug 28, 2021
Views 770
Replies 2

Natillax

Active Member

Newcomer

Level 4

Aug 28, 2021

Hi!
I can't lunch MH RISE when I update to 3.3.1 version. When I enter to the game, it says that It fails.
I'm in the last firmware and atmosphere, using the correct sigpatches for hekate.
And I don't know what to do to make my backup work

Can somebody help me?

Last edited by Natillax, Aug 28, 2021

thesjaakspoiler

Well-Known Member

Member

Level 8

Aug 29, 2021

You can select to delete a game but keep the save games around.
If you want to be sure, you can use CheckPoint to backup your save games on your SD card just in case.
After deleting and reinstalling the game (without that bad update), your saves should be there.
If not, use Checkpoint to put back your save games.

Reactions: osaka35

Draxzelex

Well-Known Member

Member

Level 23

Sep 5, 2021

Natillax said:
Hi!
I can't lunch MH RISE when I update to 3.3.1 version. When I enter to the game, it says that It fails.
I'm in the last firmware and atmosphere, using the correct sigpatches for hekate.
And I don't know what to do to make my backup work

Can somebody help me?

Where did you download the patches from?