Technical Tip: How to identify the FortiGate version before last upgrade
Description
This article explains how to determine the version of firmware running on a device prior to the last upgrade.
Solution
In this example, the FortiWiFi was running FortiOS 5.0.12 (build318) and it was upgraded to FortiOS 5.2.0 GA (build589).
FW # diagnose sys flash list
Partition Image TotalSize(KB) Used(KB) Use% Active
1 FW60CM-5.02-FW-build589-140613 39417 29517 75% Yes
2 FW60CM-5.00-FW-build318-150515 39417 28337 72% No
3 ETDB-28.00433 39420 26060 66% No
4 7437024 132704 2% NoImage build at Jun 13 2014 08:05:14 for b0589
FW_LOC #
