I am having a real difficult time updating the firmware on this controller. I have tried to make a bootable USB and I failed at that, so I am trying to do it through the storage manager. The firmware is at this link, http://www.adaptec.com/en-us/speed/raid/asr/fw_bios/5805_fw_b18948_exe.htm
This is the latest firmware, or so I am told, but I can't seem to get it to work. Any help would be very much appreciated as I have already spent two weeks trying to get these controllers to work, especially with 4tb disks.