Only the v1 would link to that software as Photos II (the version of ReadyNAS Photos on the Duo v2) is completely managed via the web browser. So you must have a Duo (v1). Photos I (the version of ReadyNAS Photos installed on the Duo v1) is EOL'd.
Not sure its a "dud" exactly. It has a lot of features that are still missing on the duo v2 - though it is slower, and as you point out, it doesn't support the new Readynas photos 2.
If you exchange it, the models to look at are the ultra/ultra plus/pro 2 and the duo v2. I like the ultra/ultra plus/pro lines myself.
I have version Firmware 4.1.8. From what I am reading, that means that I cannot use the Photo functionality. Is there another way I can use this device to share photos with family members that are not close by?
Sorry I don't know if Im right on this topic but I couldn't find a better matching. Accidentally I deleted Photos from my RND2000 and am desperate to find one to download. Can anyone please help me? Thank you so much in advance