Supported Upgrade Paths – FortiOS

Upgrading to 5.6

This table shows the upgrade path from earlier versions of the supported firmware to the latest version of FortiOS 5.6.

To make it easier to find the correct row for your upgrade, enter the current firmware version running on your FortiGate in the Search field. Only rows with the contents of the Search field will be shown.

Upgrade Issues specific to 5.6.x

Use of Port 4433

This issue usually occurs when the Admin access port for HTTPS access is changed due to an SSL-VPN using 443.

The new FTM-push feature in 5.6.0 uses port 4433 by default. If a SysAdmin has changed the HTTP or HTTPS access port to 4433 before the upgrade and FTM is enabled on the interface, once the upgrade has been completed, FTM is now using this feature and the SysAdmin can be prevented from accessing the administrative features of the FortiGate through the GUI.

  • The CLI doesn’t give any warnings regarding this issue.
  • Removing FTM from the allowaccess setting does not get back the GUI access.
  • If this issue is encountered, temporarily reset the admin ports back to their default settings to regain GUI access.

IPsec

There is an issue with IPsec tunnels when upgrading from 5.4.5 to 5.6.0, but only between these two versions. Going from 5.4.4 to 5.6.0 doesn’t present an issue. I you do upgrade between these two versions any Phase 1 psksecrets will have to be reset.

Notice: You may notice that these tables do not exactly match the Release Notes or the Upgrade Path on the Support site. See “Divergence from the Release Notes” for an explanation.

Supported Upgrade Path to Latest FortiOS version 5.6

Starting VersionBuild #                      
5.6.31547Latest Build
5.6.21486>>5.6.3
5.6.11484>>5.6.3
5.6.01449>>5.6.2
5.4.81183>>5.6.2>>5.6.3
5.4.71167>>5.6.2>>5.6.3
5.4.61165>>5.6.2>>5.6.3
5.4.51138>>5.6.2>>5.6.3
5.4.41117>>5.6.2>>5.6.3
5.4.31111>>5.4.4>>5.6.2>>5.6.3
5.4.21100>>5.4.4>>5.6.2>>5.6.3
5.4.11064>>5.4.3>>5.4.4>>5.6.2>>5.6.3
5.4.01011>>5.4.2>>5.4.4>>5.6.2>>5.6.3
5.2.13762>>5.4.8>>5.6.2>>5.6.3
5.2.12760>>5.4.8>>5.6.2>>5.6.3
5.2.11754>>5.4.7>>5.6.2>>5.6.3
5.2.10742>>5.4.6>>5.6.2>>5.6.3
5.2.9736>>5.4.4>>5.6.2>>5.6.3
5.2.8727>>5.4.2>>5.4.4>>5.6.2>>5.6.3
5.2.7718>>5.2.9>>5.4.4>>5.6.2>>5.6.3
5.2.6711>>5.2.9>>5.4.4>>5.6.2>>5.6.3
5.2.5701>>5.2.7>>5.2.9>>5.4.4>>5.6.2>>5.6.3
5.2.4688>>5.2.6>>5.2.9>>5.4.4>>5.6.2>>5.6.3
5.2.3670>>5.2.5>>5.2.7>>5.2.9>>5.4.4>>5.6.2>>5.6.3
5.2.2642>>5.2.3>>5.2.5>>5.2.7>>5.2.9>>5.4.4>>5.6.2>>5.6.3
5.2.1618>>5.2.3>>5.2.5>>5.2.7>>5.2.9>>5.4.4>>5.6.2>>5.6.3
5.2.0589>>5.2.2>>5.2.3>>5.2.5>>5.2.7>>5.2.9>>5.4.4>>5.6.2>>5.6.3
5.0.14323>>5.2.13>>5.4.8>>5.6.3
5.0.13322>>5.2.13>>5.4.8>>5.6.3
5.0.12318>>5.2.9>>5.4.4>>5.6.2>>5.6.3
5.0.11310>>5.2.6>>5.2.9>>5.4.4>>5.6.2>>5.6.3
5.0.10305>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
5.0.9292>>5.0.11>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
5.0.8291>>5.0.9>>5.0.11>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
5.0.73608>>5.0.9>>5.0.11>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
5.0.6271>>5.0.9>>5.0.11>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
5.0.5252>>5.0.7>>5.0.9>>5.0.11>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
5.0.4228>>5.0.7>>5.0.9>>5.0.11>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
5.0.3208>>5.0.4>>5.0.7>>5.0.9>>5.0.11>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
5.0.2179>>5.0.3>>5.0.4>>5.0.7>>5.0.9>>5.0.11>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
5.0.1147>>5.0.3>>5.0.4>>5.0.7>>5.0.9>>5.0.11>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
5.0.0128>>5.0.2>>5.0.3>>5.0.4>>5.0.7>>5.0.9>>5.0.11>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.19694>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.18689>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.17688>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.16686>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.15672>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.14665>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.13664>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.12656>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.11646>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.10639>>4.3.11>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.9637>>4.3.11>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.8632>>4.3.11>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.7535>>4.3.11>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.6521>>4.3.11>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.5513>>4.3.11>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.4511>>4.3.11>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.3496>>4.3.11>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.2482>>4.3.11>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.1458>>4.3.11>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.3.0441>>4.3.11>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
4.2.15356>>4.3.11>>4.3.19>>5.0.14>>5.2.13>>5.4.8>>5.6.2>>5.6.3
If you do not see the path you want here, consult the firmware's Release Notes.