This is primarily a user to user support forum.
if you do a subforum search you’ll find several past threads that discuss the differences between the older v3.x/v4.x single bay My Cloud units and the newer v2.x single bay My Cloud units. Yes people have complained about the stupid firmware numbering that has routinely caused people to ask why, with no real answer from WD.
Bottom line is the newer v2.x single bay My Cloud units have different hardware (processor/RAM) which very probably necessitates different firmware. The firmware used on the v2.x single bay My Cloud is more inline with the firmware used in WD’s more expensive multi bay My Cloud units.
Here are just two past threads discussing the difference:
https://community.wd.com/t/my-cloud-gen-2-vs-gen-1/163765
https://community.wd.com/t/difference-between-mycloud-gen1-and-gen2/161761
