An FYI to those who have the firmware 02.xx.xx single bay My Cloud devices.
WD has apparently posted the User Manual for 02.xx.xx models on the WD Documentation page: http://www.wdc.com/wdproducts/library/?id=439&type=25
Of course in predictable fashion its listed under: User Manual (PDF) (Firmware 04.xx.xx). And it is not otherwise obviously indicated which manual is for 02.xx.xx and which is for 04.xx.xx My Cloud units.
If your web browser is capable of showing the URL look for the PDF’s ending with: