An ISO file (also known as an ISO image) is a type of file that contains the contents of an optical disc, such as a CD, DVD, or Blu-ray disc. It's a single file that can be used to create a bootable disc or can be mounted as a virtual drive.

: A critical update for the 16.x branch, specifically supported for iSeries and VIPRION platforms. BIG-IP 15.1.x