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    Device > Software
    Select Device > Software to view the available software releases, download or upload a release, install a release (a support license is required), delete a software image from the firewall, or view release notes. Make sure to review the following recommendations before upgrading or downgrading the software version:
    Review the Release Notes to view a description of the changes in a release and to view the migration path to install the software. Save a backup your current configuration since a feature release may migrate certain configurations to accommodate new features. (Select Device > Setup > Operations and select Export named configuration snapshot, select running-config.xml and then click OK to save the configuration file to your computer.) When downgrading, it is recommended that you downgrade into a configuration that matches the software version. When upgrading a high availability (HA) pair to a new feature release (where the first or second digit in the PAN-OS version changes, for example from 5.0 to 6.0 or from 6.0 to 6.1), the configuration might be migrated to accommodate new features. If session synchronization is enabled, sessions will not be synchronized if one firewall in the cluster is running a different PAN-OS feature release. If you need to upgrade a firewall to a PAN-OS maintenance release for which the base release is higher than the currently installed software, you must download (without installing) the base release to the firewall before downloading and installing the maintenance release. For example, to upgrade a firewall from PAN-OS 5.0.12 to PAN-OS 6.0.3, download (without installing) PAN-OS 6.0.0 to the firewall before downloading and installing PAN-OS 6.0.3. The date and time settings on the firewall must be current. PAN-OS software is digitally signed and the firewall checks the signature before installing a new version. If the date setting on the firewall is not current, the firewall might perceive the software signature to be erroneously in the future and will display the following message:
    Decrypt failed: GnuPG edit non-zero, with code 171072 Failed to load into PAN software manager.
    The following table provides help for using the Software page.
    Software Options Field Description
    Version Lists the software versions that are currently available on the Palo Alto Networks Update Server. To check if a new software release is available from Palo Alto Networks, click Check Now. The firewall uses the service route to connect to the Update Server and checks for new versions and, if there are updates available, and displays them at the top of the list.
    Size Indicates the size of the software image.
    Release Date Indicates the date and time Palo Alto Networks made the release available.
    Available Indicates that the corresponding version of the software image is uploaded or downloaded to the firewall.
    Currently Installed Indicates whether the corresponding version of the software image is activated and is currently running on the firewall.
    Action Indicates the current action you can take for the corresponding software image as follows: Download —The corresponding software version is available on the Palo Alto Networks Update Server; click to Download an available software version. Install —The corresponding software version has been downloaded or uploaded to the firewall; click to Install the software. A reboot is required to complete the upgrade process. Reinstall —The corresponding software version was installed previously; click to Reinstall the same version.
    Release Notes Provides a link to the release notes for the corresponding software update. This link is only available for updates that you download from the Palo Alto Networks Update Server—it is not available for uploaded updates.
    		Removes the previously downloaded or uploaded software image from the firewall. You would only want to delete the base image for older releases that will not need upgrading. For example, if you are running 7.0, you can remove the base image for 6.1 unless you think you might need to downgrade.
    Check Now Checks whether a new software update is available from Palo Alto Networks.
    Upload Imports a software update image from a computer that the firewall can access. Typically, you perform this action if the firewall doesn’t have Internet access, which is required when downloading updates from the Palo Alto Networks Update Server. For uploads, use an Internet-connected computer to visit the Palo Alto Networks website, download the software image from the Support site (Software Updates), download the update to your computer, select Device > Software on the firewall and Upload the software image. In a high availability (HA) configuration, you can select Sync To Peer to push the imported software image to the HA peer. After the upload, the Software page displays the same information (for example, version and size) and Install / Reinstall options for uploaded and downloaded software. Release Notes option is not active for uploaded software.
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