The scherbius_a5.zip file you have requested: Maps Levels Missions / Objective / S Titles / Scherbius (Alpha 5) - 3.55mb is not available. Perhaps try browsing all files for the game Wolfenstein: Enemy Territory and upload any files you want to share or are missing. This is the only information we could locate:
A prototype code machine - the Scherbius device - has been developed by the Axis which would render Allied codebreaking efforts useless. The Allies must secure the prototype.