if you mean the sql, just go to your phpmyadmin and execute the file called rAthena-main-upgrade.sql and those two if you use sql logs:
-- Upgrades to table `picklog`ALTER TABLE `picklog` MODIFY `type` enum('M','P','L','T','V','S','N','C','A','R','G','E','B','O','I','X','D','U') NOT NULL default 'P';-- Drop table `cashlog` since it's not used in HerculesDROP TABLE IF EXISTS `cashlog`;
as for our different item_db structure, convert the old item_db.txt into our new item_db.conf using this: http://haru.ws/hercules/itemdbconverter/