LattePanda - 4GB/64GB with Enterprise License Win10 IoT 2016 Ent reinstall problem

I have downloaded an 4GB Win10 Enterprise image form LattePanda official website for my board.

When I tried to reinstall it, I found that the version of Win10 is not Iot 2016 Ent., it is only Win10 Home, and therefore I cannot re-activate my Win10 license.

Can anyone help?

Thank you so much.