As an FYI you don’t want the GPL version of the My Cloud firmware UNLESS you intend to compile and build your own firmware version. You can download any of the older v2.x firmware from the following post/thread:
http://community.wd.com/t/wd-my-cloud-v3-x-v4-x-and-v2-x-firmware-versions-download-links/148533
Only thing that thread doesn’t have is the downgrade instructions for v2.x version single bay/single drive My Cloud units.
