You can get the offline update from the release notes or from the Pro Installers page on GitHub. You can update Metasploit Pro using the command line for both online and offline updates using the msfupdate command.

Before doing updates, Rapid7 recommends that you create a backup of your Metasploit data. You can also update Metasploit Pro from the command line. If there are additional updates that you need to install, you must repeat this process until you have the latest version of Metasploit. Please wait a few minutes for the service to restart. Metasploit installs the update and restarts the Metasploit service when the update is done. The offline update file is the bin file that you downloaded from the Rapid7 email. Browse to the location of the offline update file and select it.From within Metasploit, select Administration > Software Updates from the Global menu.From the email that you have received from Rapid7, find and download the offline update files that you need.You will see the product edition, the release version, and the update version. Identify the current release version of Metasploit that you have installed.

Locate the footer at the bottom of the user interface.

You can move this file to a portable storage device or a shared network location so that you can easily transfer it to your Metasploit server. Click on a offline update link to automatically download the bin file. For each bi-weekly release, we will provide a download link on the release note section of the Rapid7 documentation website. Rapid7 provides offline update files that you can use to safely update Metasploit without an Internet connection.

Metasploit offline activation file