Brocade Network OS Administrator’s Guide v4.1.1 - Manual (Page 132)

Downgrading firmware in the VCS Fabric
Do the following to downgrade firmware on nodes in the VCS Fabric.
CAUTION
The downgrade process will disrupt service.
1. Ensure that the VCS cluster is in fabric cluster mode.
2. Back up the running configuration.
3.
NOTE
You can back up this file to an FTP or SCP server.
Download the previous version of firmware onto the nodes to be downgraded.
ATTENTION
Do not reboot at this point. You will be prompted to remove any vCenter configurations if they are
present.
4. After removing any vCenter configurations, reboot the nodes.
The startup configuration is replayed onto the running configuration.
NOTE
Unsupported configurations will be discarded.
5. (Optional) You can copy the running configuration file saved in Step 3 from the FTP or SCP server
to the local running configuration.
6. Save the running configuration to the startup configuration.
Downgrading firmware in the VCS Fabric
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