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

duckstation is an excellent Playstation 1 emulator by Stenzek. It has a very good compabiility and it is quite performant. It also supports all kinds of enhancements such as high resolution rendering and PGXP which can lessen the "wobble" and...

Hacking Hekate failed to init eMMC

Thread starter ccfman2004
Start date Nov 19, 2018
Views 4,583
Replies 3

ccfman2004

Well-Known Member

Member

Level 12

Nov 19, 2018

I recently bought a broken Switch online. It appears to be stuck in AutoRCM. When I try to do any operation that involves the NAND like removing the AutoRCM or backing up the NAND I get "Failed to init the eMMC". Does that mean the Nand is bad or is the GPT broken? Any ideas? I can dump the keys and fuses and such.

hippy dave

BBMB

Member

Level 33

Nov 20, 2018

I'd suggest asking in ctcaer's sticky hekate thread.

Bushido1992

Well-Known Member

Member

Level 4

Nov 20, 2018

It seems that the emmc Chip is defect / not recognized. I had the Same Issue with my corrupted emmc( the clips on the emmc was broken/corrupted)

mdmachine

Well-Known Member

Member

Level 6

Nov 20, 2018

I had this happen to me last night while setting up a switch (making backups). I resolved it by re-formatting the SD card, to Fat32.

At first I thought it was the emmc, but I guess it simply reported this error due to not having a place to dump the emmc to...?

After I redid the SD card, everything went along smoothly. Didn't notice any other issues afterwards.
I told my buddy to keep me posted though in case the chip really is failing.