Upgrading to FortiOS 7.4.8

Forum|Forum|11 months ago
October 8, 2025
3 replies
2384 views

i have a few Fortigate firewall running on 7.2.xx version.

Planning to upgrade to 7.4.8.

do i need to upgrade all at the same time or i can just upgrade the main FGT at our data centre and the rest at our site office at a later date ?

all are connected using ipsec tunnels

FortiGate

GeorgeZhong

Staff & Editor

Hi @yeowkm99 ,

There is no compatibility issue between different versions of FortiGate with the IPsec. So, we can either upgrade them at same time or different time.

But please be aware of the compatibility of other devices such as FortiManager, FortiSwitch, FortiAnalyzer and so on.

Regards,

George

yeowkm99Author

New Member

can we upgrade to 7.45M first before going to 7.48M?

is it safe to go straight from 7.2.8 to 7.4.8 upgrade in one single maintenance window or we should separate ?

Shyy

New Member

I'd suggest using the upgrade tool fortinet has
https://docs.fortinet.com/upgrade-tool/fortigate to know if upgrade path is needed.
plus read carefully all the changes between the versions before upgrading so you won't encounter any issues.

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