The ofppatch_upgrade_1_20.zip file you have requested: Official Patches / Operation Flashpoint Upgrade 2 - 38.27mb is not available. Perhaps try browsing all files for the game Operation Flashpoint: Dragon Rising and upload any files you want to share or are missing. This is the only information we could locate:
This upgrade for Operation Flashpoint adds new vehicles, new multiplayer missions and dedicated server support. NOTE: This is for non-U.S. versions of the game only. U.S. versions are already at v1.20 out of the box.