The age3102to103japanese.exe file you have requested: Official Releases / Patches / AoE3 Patch 1.02 to 1.03 - 9.39mb is not available. Perhaps try browsing all files for the game Age of Empires III and upload any files you want to share or are missing. This is the only information we could locate:
This patch will update your AoE3 client to version 1.03 and is for the Japanese version of the game ONLY. See patchnotes below for specific updates.