menu and rely on manual saves to multiple slots to prevent total progress loss. Xin Missions Access
On modern Android devices, the game data is hidden behind the "Scoped Storage" system. You will need a file manager like to access these folders.
Delete or rename the existing save. Place the new 100% save in the same folder and rename it exactly to match the original name (e.g., GameData_0_0 for slot 1).
Try renaming/restore backup: