RNDU6000 won't boot - faulty PSU or bricked NAS?

mdgm wrote:

What I suggest you do is put a spare disk (must not be from your array) in the 316, update the firmware on the 316 to the latest, verify the update is successful, power down, remove the spare disk, then move your disks across (keep the order the same) and power on the system normally. It should come up so that you can copy your data off. The NAS will detect that the drives have the old OS on them and boot the old OS off the drives so you can copy the data off. Once you've backed up your data and verified the backup is good, you can then do a factory default (wipes all data, settings, everything) and restore your data from backup.

Thanks! That makes perfect sense -- one last question, though -- do I really need to update the firmware first if I'm going to do the recovery off the 4.2.x living on the drives? No big deal to do it, I'm just wondering...