No Man’s Sky: Save Editor [1.6.11]

1. Unpack the archive to any convenient location, run the file NMSSaveEditor.JAR
1.1 If you cannot start, try “run as administrator”
2. When the main window opens, find the folder where your saves are located (C: \ Users \ your name \ AppData \ Roaming \ HelloGames) and select the latter.

No Man’s Sky: Save Editor [1.6.11] Free Download

If you select not the last save, the program will warn you. 
3. Change whatever you want!