I am trying to update the firmware on the ASA 5510. I copied the image to flash by using tftp and it seems it only got copied to the Active device, but not the standby one. I am using Active/Standby failover. How do I copy the image to the standby unit? Do I simply just make the standby the active one and copy again? Is there a best practice about how to update the firmware and ASDM image on ASAs in failover setup? Thank you!