I just upgraded my My Cloud EX4 to version 1.05.30; all of a sudden my working RAID 5 4 drive configuration is undone and the system reports my drives in bay 2 and 3 have failed! I had just replaced my EX4 earlier today because it did the same thing and I assumed it was a hardware failure as the drives all test fine. One other issue; the power supply for the system seems to be marginal; I had the EX4 constantly cycling on booting until I pulled one of the drives, let the system power up, and then reinserted the pulled drive.
Hello,
Have you tried a drive reset and /or power cycle after the firmware update?
