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...

ROM Hack Question Can PegaSwitch be used to dump Save Data?

Thread starter hector09
Start date Mar 21, 2017
Views 3,789
Replies 6

hector09

Member

Newcomer

Level 2

Mar 21, 2017

I'd like to know if its possible to get the save data from games saved on the system of the Switch with PegaSwitch.

Drakia

Well-Known Member

Member

Level 11

Mar 21, 2017

Maybe eventually it could be used as the base of a tool like that, but as of now, PegaSwitch is purely a developer testing tool.

Reactions: Shawnj

yardie

Banned!

Banned

Level 8

Mar 21, 2017

dude needs to read

thomasnet

Well-Known Member

Member

Level 5

Mar 23, 2017

We need an exploit to gain access to files that are not browser-related.

TheCyberQuake

Certified Geek

Member

Level 14

Mar 24, 2017

Right now we only have access to what the browser has access to, which is it's own files. We would need some exploit to either escalate privilege or somehow just add file read/write outside of the browser.

Nemix77

Well-Known Member

Member

Level 6

Mar 24, 2017

This and Android running on the Switch is the real reason I want root access, starting to feel the burn of not being able to backup saves...

Perhaps if Nintendo releases a fix to this allowing users to backup game saves to a Micro SD then I'd have less need for a hacked Switch.

Cloud saves from Nintendo tied to users Nintendo accounts also work for me as long I can get my game saves back somehow if needed.