As with any installation and upgrade, it is important to make a backup before proceeding to ensure a recovery point in case of disaster. It is also recommended, but not required, that you back up the certificate store on the Gateway before upgrading.

To back up the certificates, simply copy the certs folder from the installation folder

• On 8.5 and later, the location is under <install drive>\Program Files\Symantec\SMP Internet Gateway\certs\server.pfx
  Also, under Symantec Management Platform Internet Gateway Manager>Settings tab>Save configuration to a file, you can make a copy of your current Gateway configuration.
  
  
  
  Note:
  Prior to 8.5, default installation location is C:\Program Files\Symantec\SMP Internet Gateway\Apache
  
   
• As well, consider keeping a copy of the original gateway MSI for the current version in use.

** Make sure the certificate has the private key. There should be a 'Key' on the certificate in the folder you get back up from. If there is no key, open the GW manager, in the General tab open the Web Certificate, go to the Details tab, and click Copy to File button. Choose export private key and then the following three options.

To upgrade the Internet Gateway, download and run the Internet gateway installation package

1. In the Symantec Management Console, on the Settings menu, click Notification Server > Cloud-enabled Management.
2. In the left pane, expand Setup, and then click Cloud-enabled Management Setup.
3. On the Cloud-enabled Management Setup page, on the Internet Gateway Setup tab, click Download the Internet gateway installation package.
4. If you are on the gateway computer, you can click Run to run the installer immediately. If you want to save the package as a file to run later or to run on a different computer, click Save, specify the appropriate folder, and then click OK.
5. Navigate to the SMP Internet gateway installation package that you downloaded, and double-click SMP_Internet_Gateway.
6. In the Open File – Security Warning dialog box, click Run.
7. In the Symantec Management Platform Internet Gateway Setup dialog box, click Next.
8. Click I accept the license agreement, and then click Next.
9. Specify the path to the destination folder where the Internet gateway files are currently installed, click Next, and then click Next again.

These are the same basic steps as the original installation of the Gateway.