The wow-update-504enus.zip file you have requested: Official Patches / v504 / World of Warcraft v5.0.1 to v5.0.4 Patch (English/US) - 348.82mb is not available. Perhaps try browsing all files for the game World of Warcraft and upload any files you want to share or are missing. This is the only information we could locate:
This patch will update World of Warcraft (English/US) version 5.0.1 to version 5.0.4. This patch includes changes to currency conversion, items, quests, professions, UI and general class & gameplay changes.