To install an update, BIG-IP software needs access to the ISO file. If the update is a hotfix, you need the ISO files for both the base version and the hotfix before you can successfully import and install a hotfix update.

1. In a browser, open the F5 Downloads page (https://downloads.f5.com).
2. Download the version's base ISO file, such as 11.5, and its associated MD5 checksum file.
   Tip: The location to which you download ISO files is not significant. Just make sure you can navigate to that location when you perform the import task.
3. Download the update ISO file, such as Hotfix-BIGIP-11.5.1-511.0-HF3.iso, and its associated MD5 checksum file.
   Important: Before you perform the installation, F5 recommends testing the integrity of the ISO files to verify that you have downloaded clean copies. Use an MD5 verification program to ensure that the downloaded ISO file's checksums match the values in their corresponding MD5 files.
4. On the Main tab, click System > Software Management > Image List > Import. The Import Software Image screen opens.
5. Click Browse to navigate to the downloaded base level installation file.
6. When the image name appears in the Software Image field, click Import to begin the operation.
   Important: Do not navigate away from this screen before the operation completes; the system might not import the image successfully. Wait for the operation to complete before continuing with any other work on the BIG-IP VE system.
   The system presents a progress indicator during the operation; when the import is complete, the Import page closes and the downloaded base image displays as an available image.
7. Click the Hotfix List tab. The Available Images portion of the screen displays any hotfixes you have imported previously.
8. At the right side of the screen, click Import. The Import Hotfix screen opens.
9. Click Browse to navigate to the downloaded hotfix installation file.
10. When the image name appears in the Software Image field, click Import to begin the operation.
    Important: Do not navigate away from this screen before the operation completes; the system might not import the image successfully. Wait for the operation to complete before continuing with any other work on the BIG-IP VE system.
    The system presents a progress indicator during the operation; when the import is complete, the Import page closes and the downloaded hotfix displays in the list of available images.

1. On the Main tab of the navigation pane, click System > Software Management. The Software Management Image List screen opens.
2. In the Available Images area, select the software image you want to install and click Install. The Install Software Image popup screen opens.
3. Select the disk you want to install the image on, and then type or select a volume name, and click Install. The upgrade process installs the software on the inactive disk location that you specify. This process usually takes between three and ten minutes.
   Tip: If there is a problem during installation, you can use log messages to troubleshoot a solution. The system stores the installation log file as /var/log/liveinstall.log.
   The software image is installed.

1. On the Main tab, click System > Software Management. The Software Management Image List screen opens.
2. On the menu bar, click Boot Locations. The Boot Locations screen opens.
3. In the Boot Location column, click the link representing the boot location you want to activate. The properties screen for the boot location opens.
4. Click Activate. A confirmation screen opens.
5. Click OK to initiate the reboot operation. The system presents progress messages during the restart operation.