Overview
so you want to close steam and go to run and spell this steam://open/console and it will open steam and spell steam_depot you can get the builds in steamdb.info then copy ID and then copy depot ID and bottom and then manifest ID THEN copy remeber put spaces then press enter then it will say enter then go to c:drive programs then say steam then go to folder then press steamapps then press conten then delete full game then put the old one in:) then play it! then done