Save Editor for Baldur's Gate

Check the application has permissions Storage (Settings -> Apps -> Save Game Editor for Baldur's Gate -> Permissions -> Storage ON)

Run the first Baldur's Gate

2nd Remember (or write down) your character's stats

Save 3rd game

4th Run this application and click on the save game file

5th Fill your character's stats on left and new stats on right

6th Press Search and Save button