Downloading the update

1. Click the file link to download the file from the Web page.
2. When prompted, select a drive and directory in which to save the downloaded file.

Installing the update

1. Click Start, highlight Find, then click Files and folders.
2. Type e48z21us.exe in the search box, then click Find Now. This will locate the e48z21us.exe file you just downloaded.
3. Double-click the icon for e48z21us.exe.
4. Click Next.
5. Click I Agree.
6. Click Finish.
7. Click Yes.
8. Click OK.
9. Follow the onscreen prompts and choose to reboot at the end of installation.