Want to go back to previous firmware

I just got back from a two week traval stint for work.  I found that my MyCloud had upgraded to Ver 04.00.00-607.  Everything seems to be working but its abhorently slow.  I have not made any changes to the device or added any third party software to the device its as stock as it was when it came out of the box.  Can anyone PM specific directons to downgrading the firmware?  This thing rocked before it upgraded it self.  Thanks in advance


Even more specifically ->  http://community.wd.com/t5/WD-My-Cloud/GUIDE-Transmission-2-82/m-p/762048#M17192