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...

So the use of game cards and microSDs may not be a problem speed-wise

DiscostewSM

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Level 16

Jan 20, 2017

Ok, before you say anything about the "source" of this posting, be aware that this was done with someone wanting an answer, but didn't get one, so he did the work himself. The question was regarding is using a microSD would be a problem when cards don't have as high a transfer rate as HDDs. So when he did his test, he found that microSDs ranged between SSDs and HDDs in a game scenario.

http://www.gamefaqs.com/boards/189706-nintendo-switch/74867686

Test involving Assassin's Creed Syndicate. SSD in computer, PS4 Pro HDD in USB 3.0 enclosure, microSD in USB 3.0 adapter, and loading a scene.

SSD average: 26.37 seconds
HDD average: 46.62 seconds
microSD average: 36.14 seconds.

My assumption for this results is based on games being made up of thousands (even tens of thousands) of unique files, and access time is causing HDDs to lag behind both SSD and Flash media when loading scenes because they are made up of so many different unique elements (even if the HDD can transfer large files much better than Flash media).

This is just one example, so perhaps others might want to do some tests of their own with different games to see if they get similar results in storage order.

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Hardware So the use of game cards and microSDs may not be a problem speed-wise

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