Downloading Windows 10 IoT for PoC

Hello,

I purchased a Wyse 5470 client that came with ThinOS installed. I'd like to do a proof-of-concept with the device but need to install Windows 10 IoT onto the thin client. I cannot find the ISO necessary to do so. Can someone provide me with it so that I may continue my work.

Do I have to purchase a new Wyse client and select W10 IoT?