Hyper-V Update file not working

Hi,

I was very happy to learn about the SFOS V17 Beta, so I downloaded the update gpg file for Hyper-V. I went to the webUI of my XG to upload the gpg file. After the upload starts, an error appears saying the upload failed and I should turn to online help to find out what went wrong. 

Did anybody else had this?

Greets,

Jeffrey