Never modify a file without a backup. Use a tool like on your hacked Switch to export your current game save to your SD card. Copy this backup to your computer. Step 2: Choose Your Free Editor
Keep your original, unmodified save file in a separate folder. If the free editor writes data incorrectly, your game may crash on launch. If this happens, delete the broken save and restore your backup. To help narrow down the exact tool you need, tell me: What are you trying to edit? nson save editor free
Set your game completion to 100%. This instantly unlocks all: Never modify a file without a backup