The build number 1.1.6.4392638 indicates it includes the major Dustmander update and various quality-of-life improvements implemented since launch.

Significant reductions in co-op desync and mission-breaking bugs present at the original 2022 launch.

Ensure you have every numbered part in the sequence (e.g., part01 through partXX).

Use WinRAR or 7-Zip to open "part01," which will automatically pull data from the subsequent parts.