This will show you how to manage Mario Wonder saves on a Switch. Find saves here.

Prerequisites

• Homebrewed Switch with Atmosphère Custom Firmware (Tutorial)
• A digital/physical copy of the game
• A PC to transfer files to the Switch

Installation

• Get the latest JKSV.nro -> extract it to /switch/ on the SD card. Use a FTP server, or connect the SD card to your PC then eject it after.
• Extract saves to /JKSV/Super Mario Bros. Wonder/. Find them here.

Here’s the file structure (100 is the save name):

Save Management

Open JKSV using either method:

• Holding the R button while starting any app (Recommended to allocate more memory)
• Applet mode with the Album

Press A on the user you want to manage a save for -> find Wonder's game icon.

Backup

Press A on "New Backup" + name this what you want. Put it someplace on your PC; the saves are kilobytes big!

Restore

Press Y on the backup you want to restore -> hold A.

Overwrite

Press A on the backup you want to overwrite -> hold A.