High availability upgrade to a different firmware version

I have a question regarding updating a HA setup from Firmware SFOS 19.5.3 MR-3-Build652 to SFOS 20.0.2 MR2-Build378. Since this is an update to a different version, does the same principle apply here where...
HA link zone?

What's "best practice" regarding HA link network? - at the moment my HA link network (physical port / peer2peer) is zone DMZ -> not cool because SSH access for DMZ zone must be activated or HA will not...
WAN Link Load Balancing in v20

What is everyone's experience with WAN link load balancing in v20? We're a K12 private school with two identical WAN links from different ISPs, Frontier and Comcast. Our goal is to enable WAN link load...
Firewall Management - Firewalls - No firmware is available - Device is up to date

Hey Folks, some of our XGS FWs have reported by mail, a new firmware update would be available for download/installation. Central instead isnt reporting anything, and still shows firewall is up to...
Sophos XGS136 SFOS 21.0.0 with High CPU Utilization

Hello! After updating to SFOS 21.0.0, we're facing a high CPU utilization. I've found that snort is related to IPS Engine. Pattern updates for IPS and Application signatures are updated...