When trying to force entering recovery mode, because I wanted to downgrade from Cloud OS 5 to 3, I did a mistake running the command via ssh:
dd if=/dev/zero of=/dev/mtdblock0
When WD My Cloud restarted it directly gave solid purple led (not red, not blue). There is no blinking leds back on the Ethernet.
I tried the 4 secs and 40 secs reset with no luck.
I tried to boot via USB (WD Recovery) with no luck either.
I disassembled the cloud and was able to get all the data from the drive by hooking it to Windows PC and using ext4 partition reader.
I don’t know what the problem is, I am guessing the problem is more likely to be on the board and not on the HD drive.
Help is pretty much appreciated.