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.

Nintendo Switch locking up while loading data only when playing docked

efgamer

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Newcomer

Apr 7, 2021

Almost after one year playing it docked without any problem since yesterday I've been having issues with my switch sadly.

When I'm playing any game installed on micro sd when the game tries to load any data sometimes it locks up and resume after few seconds later. It doesn't happen everytime but it's really anoying and I'm sure it may occurs more often over time.

When I play undocked everything runs flawlessly so I don't think it may be corrupted data or a defective micro sd.

I've tried to change the resolution to 720p on system settings when docked to see it the problem might be the GPU but the freezing when loading data persisted so it may be the CPU or something wrong with the dock.

Has anyone ever experienced this? Is there a fix or is my switch dying?

EDIT: in short, the game freezes and resumes after the loading data is finished only when playing docked.

Last edited by efgamer, Apr 7, 2021

Hardware Nintendo Switch locking up while loading data only when playing docked

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