The old saying about a station wagon full of tape remains true!

tl;dr They block UDP if it uses more than a little bit of bandwidth. 

See this page. It tells ya all you need to know. 

The USB based updates for my Blackmagic Videohub 40x40 12G were hanging at 0%. Turns out the fix is easy: Don't use USB, use IP for the update. While I had to use the setup menu on the front panel to do a rather painful IP change, once done it's done. 

VJ Darwin is on the ATEM Mini switching your video while you're in meetings. 

How to convert from a Z-Stick Gen5 to a Z-Stick 7

Note: Take backups (system & Z-Wave JS UI) both BEFORE and AFTER the change.