Blackmagic

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. 

If you've got an old school ATEM 1 M/E Production Switcher and need to update the firmware but keep getting windows driver errors regarding writing to read only memory:

1. Download ATEM software v6.9 and perform a firmware update via USB
2. Configure the IP and optionally name
3. If needed download the latest version and update the firmware via LAN
4. If you have issues with the latest try 8.1.1.

A related post.