Nba.2k17-codex.part03.rar -

Use a utility like WinRAR or 7-Zip . You only need to right-click and "Extract" the first file ( part01.rar ), and the software will automatically pull data from part03.rar and the others.

This typically refers to the initial "scene" release of the game from 2016, which includes the full game and the CODEX crack. Technical Notes NBA.2K17-CODEX.part03.rar

If you encounter a "Checksum Error" during extraction, it usually means part03.rar is corrupted and needs to be re-downloaded. Use a utility like WinRAR or 7-Zip