I mean you said you had a black screen before i even wrote my message so can we get the facts right. I didn’t tell you to do anything, you already had a black screen.
https://cyanlabs.net/tutorials/sync-3-automated-method-update-to-3-4/
It clearly states if your car looks like the “left side” but yet you had a 4" model so it wouldn’t have looked like that.
As you have a black screen now for reasons unknown i don’t know how to fix it, if you had a oversized screen then it just needs a update to the 4" version, but at this point i have no idea as you aren’t telling the truth about how you got the black screen.
Follow the steps posted by F150Chief in this topic, but again as you have a black screen i have no idea if it will work or not, i suspect the black screen might be because it’s in reformat mode, in which case you will need a 8" screen to fix the issue afaik.