Hi,
The background disk firmware update will be completed unless the following conditions are encountered:
Degraded volumes are on the storage system.
Disks needing a firmware update are present in a volume or plex that is in an offline state.
Automatic background disk firmware updates will resume when these conditions are addressed.
In case it didn't happen, please check if Automatic background disk firmware updates are overridden when the disk_fw_update command is issued.
Note: Automatic background disk firmware updates are enabled by the raid.background_disk_fw_update.enable option, which is set to on by default. The value of this option can be overridden during a high-availability takeover, when the disk_fw_update command is issued, or when a disk firmware update is required for disks in a RAID4 aggregate. You are advised not to change the default value unless you are directed to by technical support.
Hope it helps! Please mark it answered if you got the solution.
Best Regards,
Ravi