for Windows: rAthena\src\custom\defines_pre.h #define PACKETVER 20170517   for Linux: run the following command ./configure --enable-packetver=20170517     rAthena\src\map\clif_packetdb.h    (the packets not completely work 100% so if you have problem post it here maybe someone will help you fix it) (this already added to official rathena no need to add it manually anymore) EDIT:   packets can be find here >> https://github.com/rathena/rathe