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Cyber Elite
Cyber Elite

Hi @jirasith 

(Firewall A = currently active firewall, firewall B = currently passive firewall)

  1. Download PAN-OS 8.1.19 to both firewalls
  2. Install 8.1.19 and reboot firewall B
  3. Download PAN-OS 9.0.0 to firewall B
  4. Download PAN-OS 9.0.13, install it and reboot firewall B
  5. Install PAN-OS 8.1.19 on firewall A and reboot (when you click reboot a failover is done to firewall B)
  6. Download PAN-OS 9.0.0 to firewall A
  7. Download PAN-OS 9.0.13, install it and reboot firewall A
  8. Download PAN-OS 9.1.0 to both firewalls
  9. Download PAN-OS 9.1.10 to both firewalls
  10. Install PAN-OS 9.1.10 on firewall A and reboot (when you click reboot a failover is done to firewall B)
  11. Install PAN-OS 9.1.10 on firewall B and reboot

To make sure that you can downgrade in case of any problems export the configuration at all of the following steps on both firewalls:

  • Installation of 8.1.19
  • Installation of 9.0.13

 

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