original by Napster ( https://rathena.org/board/topic/97889- ) equivalent ExtendedVendingSystem_1.9.4_r15149.diff   very recommend use clean server for this patch. back up your server first before patch and use as your own risk.   Step 1: download patch.diff and place to rAthena working directory. Step 2: in Git Bash, browse to rathena directory (cd command) and execute this command. patch -p1 -l < patch.diff or git apply patch.diff result should be.     Step 3: migrate data