Wd ui iso image? (help!)

My Cloud OS 3 Personal & Network Attached Storage My Cloud
4

There is no ISO for the OS/UI that I know of, but several users were able to restore their image through this thread:

http://community.wd.com/t5/WD-My-Cloud/How-to-unbrick-a-totally-dead-My-Cloud/m-p/651195/highlight/true#M3848

This is tantamount to a complete reset of your disk though. Did you try to reinstall the firmware using this type of instructrions?

http://community.wd.com/t5/WD-My-Cloud/Easy-method-to-downgrade-to-previous-version-of-the-firmware/m-p/773073/highlight/true#M18956

Since you can access through SSH, backup the content of your shares before trying the above.