On the main menu, you'll see 'Dump gamecart content' and 'Dump SD card / eMMC content.' Choose the one you want for what you have, and make sure you've located Sonic Mania if it's installed on your Switch. Once done, launch hbmenu and locate nxdumptool. nro in the /switch folder on the root of your microSD. If you don't have it, get the latest release and place the. If you have Kosmos 14.2, this is already pre-packaged with the latest version. You'll need the latest version of the homebrew app nxdumptool.

I wouldn't recommend using the rsdk file from a Steam bought version of Sonic Mania, but you can try since it has essentially the same data files as the Switch version, but to make it easy and safe, use the one from your Switch. This is because the file we want to use, 'Data.rsdk,' is located in RomFS folder when dumped. If you want to use add-ons, use the PC version.įirst, you'll want to dump your RomFS from a legally owned copy of Sonic Mania, either installed internally or externally on your Switch, or from your cartridge. Only use mods that overlay existing files in the Data.rsdk folder. DLL files need an external program/dependency to function, otherwise you'll end up with a black screen. If you're new to the scene, use this guide or the helpful guides from many members of GBATemp. Note: I expect you've got custom firmware on your Switch and you know how to inject a payload and launch hbmenu. I'll explain what to do with it further down. You also need to obtain access to 'Data.rsdk.' It's a compressed file for Retro Engine (the engine Sonic Mania runs on) which contains all media data for Sonic Mania. It's best to also have the Plus DLC because most mods now replace certain files only accessed by having the Plus DLC. Make sure you've updated to the latest version of Sonic Mania (1.0.4). ReiNX users will have to use this tutorial with the latest version. LayeredFS already comes pre-packaged with the latest versions of SXOS and Atmosphere, so if you have any of those two, you're good! I'll be showing how to do it on Atmosphere, but I'm sure SX has the same kind of file structure for LayeredFS.

So, I wanted to make a revised tutorial on how you can mod Sonic Mania with updated tools.

The program attached to the thread was very useful for the base version of the game, but now since Plus has released, it's a bit more confusing and outdated.

A year ago, a thread was made on how to mod Sonic Mania with LayeredFS by

Sonic mania mod manager not working