The rtcw_141beta.sit file you have requested: Official Releases / Patches / RTCW Patch 1.41 (Macintosh) - 16.19mb is not available. Perhaps try browsing all files for the game Return To Castle Wolfenstein and upload any files you want to share or are missing. This is the only information we could locate:
This will update the Macintosh version of RTCW to version 1.41. It is recommended that this update be applied to a clean install of the game, or version 1.32.