A FortiWeb can be configured to join a Security Fabric through the root or downstream FortiGate.
Article Id 255246
Description This article describes how to start a FortiWeb in a previous firmware version in case of some issues after an upgrade.
Scope FortiWeb v7.x.

First, identify if the old firmware is installed by using the following command:


FortiWeb # diagnose system flash list
have 4 partitions
Image# Version TotalSize(KB) Used(KB) Use% Active
1 FV-VMB-7.0.2-build0298-220812 370760 309648 84% Yes
2 FV-VMB-7.0.2-build0097-220810 370760 263232 71% No <-----
3 2020-10-09 23:00


Choose the default partition to start in the next reboot, for example, 2:


FortiWeb # diagnose system flash default <partition_int>

FortiWeb # diagnose system flash default 2