Let me guess, you unbricked to the v3.x firmware then performed an upgrade to the v4.x firmware and now cannot access the My Cloud Dashboard. If so its a common problem some of us including myself have run into with certain unbricking procedures for the older gen 1 single bay My Clouds that run v3.x/v4.x firmware. I detail what I did to fix this issue that worked for me, may not work for others, in the following post.
http://community.wd.com/t/unbrick-then-firmware-upgrade-equals-no-dashboard/136666/6
Also see the unbricking methods posted by Fox_exe which can be found at the following link, see the subfolder for your particular My Cloud:
https://drive.google.com/drive/folders/0B_6OlQ_H0PxVRXF4aFpYS2dzMEE
If you haven’t unbricked yet then the link you posted is one of the various unbrick methods that many have used successfully. Sometimes people have to try several different unbricking methods before finding one that works best for them.