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...

ROM Hack Question REQUEST: Castle Crashers Remastered save editor/cheats

Thread starter Deleted User
Start date Sep 23, 2019
Views 12,207
Replies 4
Likes 1

Deleted User

Guest

Sep 23, 2019

This game inexplicably erased all my progress after a 4P coop session for the second time this week. Would love to edit my save back to where I was before. With such a grind heavy game, this loss really sucks!

Reactions: Tralphy

emperormaxis

Member

Newcomer

Level 1

Sep 25, 2019

I second this request. Bring on the juicy Castle Crashers switch cheats!

R3DM3TAL

New Member

Newbie

Level 1

Oct 17, 2019

This is because with castle Castle Crashers on all platforms, your save is tied to your account. Inability to authenticate with the server means no saving. I have the same issue

Magnus Hydra

It’s rare for me to be here.

Member

Level 5

Nov 5, 2019

The save files has some kind of encryption. Since that has never been my area I can't be of any help. If it was decrypted, it would be easy to change the info. All items and weapons are 0 turned to 1 for on, same with stages and max Exp for max lvl. Sadly they went and added more protection then they did back on the 360 lol.

Last edited by Magnus Hydra, Nov 5, 2019