Description
This article shows one of the recommended actions to do when encountering a warning message such as this:
'Could not communicate with FortiGuard to determine the correct upgrade path for this firmware version'.
Ensure that upgrading to FortiOS v6.4.13 build2019 from FortiOS v6.4.6 build6083 is supported, otherwise, it may result in the loss of configuration.
Scope
FortiGate.
Solution
Sample warning message below:
When this happens, proceed in doing a firmware upgrade by downloading the firmware image and uploading it to the GUI.
Check the following link below on how to download the firmware image:
Check the following link below on how to upload the firmware image:
Best practice in performing a firmware upgrade:
