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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Hacking Question Nand backup using tx pro and hekate payload

Thread starter Zolmastrian
Start date Jun 23, 2018
Views 3,317
Replies 5

Zolmastrian

Member

Newcomer

Level 2

Jun 23, 2018

Correct me if I'm wrong but you can use the dongle to inject Hekate from a pc (using a usb 2.0 --> microusb cable) and then you can backup your nand without the need of the usb 2.0-->usb C cable (like you do now without the tx pro)

In this way the dongle acts as a microusb/usbC adapter, am I right?

So no need to buy the 56 ohm cable?

Thetoto

Well-Known Member

Member

Level 5

Jun 23, 2018

You are talking about SX Pro dongle ?
Why do you want a dongle to launch Hekate from a PC ?
I dont understand...

--------------------- MERGED ---------------------------

Oh, i understand. But no you can't do that.
But you can simply launch hekate via SX bootloader. And no need for usb c => usb a cable.

Zolmastrian

Member

Newcomer

Level 2

Jun 23, 2018

Because I've ordered the tx pro but I don't have a usb 2.0 --> usb C cable

Thetoto

Well-Known Member

Member

Level 5

Jun 23, 2018

I edited my post. You can launch hekate through "Option" => "Custom payload" on SX bootloader.

Reactions: Zolmastrian

Zolmastrian

Member

Newcomer

Level 2

Jun 23, 2018

Nice, thank you!

pLaYeR^^

Doctor Switch

Member

Level 13

Jun 23, 2018

You can launch hekate with SX OS by choosing the "Launch external payload" option in the SX OS boot menu. Just copy the hekate payload on the root of your micro sd card.

Reactions: Zolmastrian