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...

Fire Emblem Warriors - Save Data Edit Question | GBAtemp.net

GamerMan8010

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Newcomer

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Feb 21, 2022

Would it be possible to "Copy" save data from the Nintendo 3DS version to the Switch version? I put copy in quotes because I have seen previous threads saying that the offsets for various items, etc, are different between both versions, and that while directly replacing doesn't crash or mess up your Switch, it does end up making every character Rowan, which I can confirm happens.

I would love to ask this question in the other threads I have seen, but all of them are closed and haven't seen anything else since then.

I have over 400 hours and everything completed, except for the crests and supports between allies. It would be an unbelievable pain to do this again.

My 3DS is working and nothing is wrong with it as of yet, but in case something happens, I can "pick up where I left off".

Any help would be appreciated thanks!

Fire Emblem Warriors - Save Data Edit Question

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