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.

Gaming I got a spear Mario code because of a broken switch screen... What should I do?

Thread starter Dan-the-Rebirth
Start date Nov 29, 2017
Views 1,445
Replies 9

Dan-the-Rebirth

Well-Known Member

Member

Nov 29, 2017

I bought the Mario bundle but the screen was defectiv so I mailed it back to Amazon and got a new console. So now I have 2 codes. What is your advice? Can I give one of them to my brother? Can I somehow check if the code is still valid?

Last edited by Dan-the-Rebirth, Nov 29, 2017

yusuo

Well-Known Member

Member

Level 16

Nov 29, 2017

Do you really need affirmation from random people on the Internet, give your brother the old code, if it works great. If not oh well.

Common sense my child

Reactions: Eddypikachu, Uumas, Quantumcat and 2 others

choupette

Well-Known Member

Member

Level 4

Nov 29, 2017

I would be really surprised if they somehow deactivated the first code. There's not harm in trying it anyway.

KiiWii

Editorial Team

Editorial Team

Level 32

Nov 29, 2017

Spear Mario sounds like a game I would play.

Reactions: NekoMichi, yanagi, xXDungeon_CrawlerXx and 1 other person

Fusion

On/Off GBA-Temp'er

Member

Level 9

Nov 29, 2017

Try activating your own first, just in case one code deactivates the other & then only your brother will have the game & not yourself.

Reactions: Quantumcat

Dan-the-Rebirth

Well-Known Member

Member

Level 8

Nov 29, 2017

I am talking about the legal side of things. I already installed my new Mario code. My brother gets his switch for Xmas so I can't try now. Can you abort a purchase if I enter the code on a friends switch?