4.06 update file is corrupted

If you haven't done so already try starting the system in safe mode run option 5 rebuild the database and try the update again.

https://www.playstation.com/en-gb/get-help/help-library/system---hardware/power---system-stability/safe-mode-on-playstation-4/

If possible hardwire your system rather than wireless to avoid a corrupted download.