Problem with the update of Android 9 pie (A6+)

[Tores42]

A few hours ago I updated the update for Android 9 Pie on my Galaxy A6 +. During the restart and after the installation of the update I still have the black screen with the white word "SAMSUNG" for over an hour (in summary the classic screen during smartphone startup).  What can I do???

[errai]

for me my i have a problem with my camera and wifi after update 

[SimonArpy24]

Today I have updated my Galaxy A6+ and after the installation it stuck at the Samsung logo and since then it does not start. What can I do aout it?