Upgrade IE9 Beta to RTM (Windows 8 7850) 01. Download IE9 Official Version (IE9-Windows7-x86-enu.exe), (Save it to C: ) 02. Run CMD as Administrator 03. Type C: IE9-Windows7-x86-enu.exe / x: "E: IE9-Windows7-x86-enu.exe" Enter 04. Type dism / online / Add-Package / PackagePath: "C: IE9-Windows7-x86-enu/IE9-Win7.CAB" Enter 05. Type dism / online / Add-Package / PackagePath: "C: IE9-Windows7-x86-enu/ielangpack-ENU.CAB" Enter 06. Reboot!