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...

Switch not charging & not power on

Thread starter alecron
Start date Jun 27, 2022
Views 969
Replies 1

alecron

New Member

Newbie

Level 1

Jun 27, 2022

Hello, first post here and first time fixing a Switch. I recently got a Switch that won't turn on and doesn't seem to charge. I looked for short circuits and I found a lot around both of the MAX77621 so I removed them from the board, but the shorts are still there. I kept looking for more shorts and there were a lot. I rounded all the faulty capacitors i found so far. Do you know what could be happening?

Thanks! (and sorry for my English )

I painted in blue the ones that I don't have a clue about what's happening and green for the MAX77621 ones.

jkyoho

Well-Known Member

Member

Level 10

Jun 27, 2022

both max77621 ICs are DC buck to SOC, so low resistance(or you thought was short) is normal. but the cap on pin1 BQ shouldn't have short. I would check there first
For reference: my resistance measurement on working v1 motherboard of both max77621 ic cap/coil
LEFT max77621: around 42 ohm
bottom max77621 around 98 ohm

Last edited by jkyoho, Jun 27, 2022