You need a homebrew application such as Checkpoint or JKSV to export the raw save file from your console to your SD card.
Use JKSV on your Switch to create a manual backup of your valid d3save . diablo 3 nintendo switch save editor free
Ethical and community considerations
save files on the Nintendo Switch is possible using free community-made tools, though it requires a modified console (Custom Firmware) to extract the data. Unlike other platforms, Nintendo does not allow users to copy save files directly to an SD card or external drive for editing. Popular Free Save Editors You need a homebrew application such as Checkpoint
Unlike the PlayStation 4, the Nintendo Switch does not allow you to simply copy save data to a USB drive. To use a save editor, you must meet these conditions: Custom Firmware (CFW) Unlike other platforms, Nintendo does not allow users
Installing CFW on newer Switch models (V2, OLED, or Lite) requires physical hardware modifications (modchips), which can be expensive and risky for the hardware.
Edit character levels, Paragon points, gold, and materials.
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