The bc42_20.zip file you have requested: Tools and Utilities / Mapping / BattleCraft - Updated v2.0 BF1942 Editor - 18.72mb is not available. Perhaps try browsing all files for the game Battlefield 1942 and upload any files you want to share or are missing. This is the only information we could locate:
Electronic Arts has released an updated Battlecraft 1942 version of the Battlefield 1942 map editor, . This new v2.0 version updated with new applications like the PreFab Manager and Surface Map Painter, enhancements to the existing tools, bug fixes, etc.