U4919DW, firmware update failed, USB-C now not working

Hi, 

I tried to update my U4919DW monitor's firmware to M2B108. But soon after starting the update process, the U4919DW seemed to restart for a second, I got an error message that the firmware update was unsuccessful. Since then the USB-C connection has stopped working. My laptop is not being charged and all of the USB connections have stopped working. When I try to re-run the firmware update, it says "Monitor not detected" even though I still have the picture through my DP cable. I have also successfully installed the "Dell 49 curved U4919DW USB-C Monitor Driver" but still the USB-C is not working. I tried a different USB-C to USB-C cable, but didn't solve the issue. I checked the firmware updater description where it says "IMPORTANT NOTE: The monitor firmware update will take approximately 30 minutes. Interruptions during the update process such as disconnecting or turning off the monitor or PC will cause damage to your monitor." and now I feel like my U4919DW is kind of damaged! Does anyone know how to fix this issue? Thanks