This morning I saw that I had a new security update. I started the update and walked away. When I came back to the phone the screen was black. I tried holding the power button, holding the power button and down button for 10 seconds, holding all 3 buttons for 10 seconds... nothing... Anyone else have issues after the last update. I'm not sure if this matters or not, but I have the unlocked S20+ 5G version.