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...

How to make a SD Card ISO backup?

Thread starter Twiggs4625
Start date Nov 24, 2023
Views 844
Replies 3

Twiggs4625

Well-Known Member

Newcomer

Level 2

Nov 24, 2023

I have a 1TB SD card and it has take a while to get it the way I want it... being that I am using the EMUMMC Partition and not a file based one. How do I make an ISO backup of my SD card so I can just write an identical copy of my card with partitions and all back to another card if needed.

I know I will need to backup saves. However, for now... I just want a file set backup of everything as it stands.

BigOnYa

Has A Very Big

Member

Level 18

Nov 25, 2023

Follow this video till you have a copy/folder on the PC.

Jayinem

Well-Known Member

Member

Level 9

Nov 25, 2023

Technically you don't use ISOs when it comes to sd cards but just copy everything to your computer or external hard drive on your computer, done.

Twiggs4625

Well-Known Member

Newcomer

Level 2

Nov 25, 2023

Jayinem said:
Technically you don't use ISOs when it comes to sd cards but just copy everything to your computer or external hard drive on your computer, done.

I'm using a EMUMMC partition, not a file... so how would I go about backing that up? I'll watch the video posted but this is why I ask.