Dumping RomFS

The easiest and fastest way to dump your game's filesystem is using yuzu.


 * 1) Obtain a dump of ACNH (in XCI or NSP), as well as an update for the game (in NSP). You can dump your copy of the game using nxdumptool.
 * 2) Open yuzu.
 * 3) Add your game directory that has ACNH in it.
 * 4) File > Install Files to NAND. Select your NSP update to install it. It should now display, for example,  in the Add-ons column.
 * 5) Right click on ACNH in the game list, and select Dump RomFS.
 * 6) Select Full and click OK. Wait for the dump to complete.
 * 7) The dump location for ACNH is in.

You can also dump your RomFS directly with nxdumptool, but it is very, very slow. Depending on your microSD speed, it can take 20-30 hours to do a full dump.

Now, you can go to Tools and start fiddling with some files!