Question: macOS Catalina 10.15.4 update bricked my MacBook Pro
The 10.15.4 update bricked my MacBook Pro (15 inch, 2018). No power, no nothing...
Tried all keyboard tricks possible.
Had to install Apple Configurator 2 on my Mac Mini, connected both with a USB-USB C cable and restored through DFU and the MacBook started responding! I'm now reinstalling the OS.