Another thing, considering the fact that you have unowned luns, is that you may have cache dirty on these luns that you need to clear [Bring lun Online Option in Navisphere] before upgrading the FLARE.
Hi,  After initiating the upgrade for a CX500 system, the operation stopped with the following error: "Operation Failed: An error occured while disabling the cache settings (0x71518034)  Next phase to this is to run the check scripts but it didn't even go there. When I checked the cache using command line, the read and write cache were successfully disabled. I re-enabled to the read and write cache then re-execute the upgrade but it still failed on the same phase.  Has anyone of you encountered this issue?  Thanks, Christian
FLARE upgrade operation failed while disabling cache settings