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

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Gaming Tokyo Mirage Sessions #FE Encore Black Screen Issue

Thread starter FellDragonGrima
Start date Jan 24, 2020
Views 1,709
Replies 2

FellDragonGrima

Well-Known Member

Member

Level 5

Jan 24, 2020

Hiya! So I’m trying to play my recently acquired Tokyo Mirage Sessions #FE Encore on my Switch using CFW. However, once I activate the game, all of a sudden, the screen turns black and I cannot even use any buttons to get back to the HOME menu. It’s like the Switch not only gives me a black screen, it freezes as well!

What’s going on here exactly? Am I doing something wrong? I just don’t understand. Please assist me if you can!

pr0dukt

Well-Known Member

Newcomer

Level 3

Apr 26, 2020

Having the exact same issue. Anyone aware of a fix? It doesn't seem to be happening for any of my other titles currently.

FellDragonGrima

Well-Known Member

Member

Level 5

May 1, 2020

pr0dukt said:
Having the exact same issue. Anyone aware of a fix? It doesn't seem to be happening for any of my other titles currently.

I was able to fix mine, but I had to reset the Switch to do so. Thankfully, I backed up all the data. I figured that I got that black screen due to some corrupt data. I don’t know how that happened though to be honest. Hm!