Talk:Troubleshooting/@comment-209.141.216.255-20110808174037/@comment-4291225-20110814005543

Any service pack will work for league. A service pack (SP) is a Windows update, often combining previously released updates, that helps make Windows more reliable. Service packs can include security and ... It just fixes stuff that might cuase security risk/bugs and other .dll registry fixes. for The Firewall here is a Link for League http://support.leagueoflegends.com/entries/234278-firewall-settings it will explain what you need to know.