Use the hex editor to identify the data you want to edit. This may involve searching for specific values or patterns in the file.
Here is the definitive guide on how to edit an ES3 save file. how to edit es3 save file
: While standard Notepad works, Notepad++ is recommended for handling the large, single-line JSON strings often found in .es3 files. Use the hex editor to identify the data you want to edit
%userprofile%\AppData\LocalLow\[CompanyName]\[ProductName]\ . how to edit es3 save file
The file is saved as plain JSON. You can edit the values directly, but be careful to maintain the JSON syntax (don't delete quotes, commas, or curly braces).
: %USERPROFILE%\AppData\LocalLow\[CompanyName]\[ProductName]
string path = "C:\path\to\save.es3";