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...

Problems with upgrade/downgrade with HacDiskMount

Darkterras

Active Member

Newcomer

Level 2

Nov 10, 2019

Hey people, dont know if im posting my question in the right forum.

As a note im only doing this because my switch got bricked after an update to 9.0!
I have a problem with Hacdiskmount and the Biskeys. I simply followed the guide here up to Step 9 https://switch.homebrew.guide/usingcfw/manualchoiupgrade

However im at the part where i need to insert BIS Key 3 in HacDiskMount in USER. For whatever reason i always get a FAIL! Entropy when i click on Test.
I dumped my Biskeys multiple times with Lockpick, biskeydumpv9 or with the sdsetup biskeygen. Anytime i get an error on this.
Every other biskey was tested and is fine.

Update:
Tried again with a 6.1.0 rebuild of Nand, formatted SDCard, redumped Keys, still a problem with the USER in HacDiskMount.
Im done, i have no clue what to try now

Update 2:
Alright, now the keyblob is corrupted, biskeys cant be dumped and pkg2 decryption failure. Seems like the emmc is nuked. Time to put it aside and wait unless i can think of anything else

Last edited by Darkterras, Nov 13, 2019

Homebrew Question Problems with upgrade/downgrade with HacDiskMount

Active Member

Similar threads

Popular threads in this forum