You can installGoogle Earth Pro to auto-update.
Download GoogleEarth Pro for desktop
If you need to manually update Google Earth, you can download the most recent 7.x direct installers. Some of the following installers do not auto-update (not recommended).
Download a Google Earth Pro direct installer
Google Earth versions 7.1.7 and earlier are no longer supported.
V7.3.6
v7.3.4
v7.3.3
v7.3.2
v7.3.1
v7.3.0.3832
v7.1.8.3036
Tip: By downloading Google Earth from the direct download links above, you're also agreeing to the Google Earth/Maps Terms of Service and Google'sPrivacy Policy.