2024 Ford Transit 8" screen upgrade

Went to upgrade the 4" screen to an 8" screen, followed directions, was doing well until the end, Screen went black, tried the Power and forward skip to reset, that didn’t work. Now when I turn the key on the Ford logo shows up, goes away, screen is dark. Tried to reset a few times, no go. Any ideas. Thanks

Update went back to the 4" screen, black also. What the —?

How does this have to do with Syn3 Updater? Did you use it and follow the instructions?
Need more info to help…

You need to go back to the person who gave you these instructions to upgrade from the 4" to the 8".