Here are the manuals
http://community.wd.com/t5/WD-My-Cloud/How-to-unbrick-a-totally-dead-My-Cloud/td-p/651195
You only need the part with RAID disks.
Just restore two disks images with rootfs files and it will work.
The bad part is you must remove your hdd from box and loose warranty.
It’s ok to kill Linux from time to time when you are playing with everything, but things like disabling apt-get command in firmware 4 are really not ok.
