Only users with the 'Admin' role can access the Backup and Restore screen.
- Sign in to Manage using your admin login credentials. Re-verify the password for user admin.
- Go to Administration > Backup and Restore. The Backup and Restore screen is displayed.
- Navigate towards the end of the Backup and Restore screen to the List of all backup files section.
- Locate the appropriate backup file that you prefer to delete and click on the Delete button available in the Action column. A confirmation message appears, as shown on the following screen.

A success message appears after deletion. A sample message is given below.
File beforeFixtureUpgrade_2.2.0-3446_2013-03-12_16-12.tar.gz deleted successfully