Was the update in progress?Glad to hear that it works. My phone just died. Was rebooting to take the Oreo3 update. It's stuck in a black screen and I can't even go into fastboot/bootloader right now. Not sure if anyone knows how I can recover this phone. I am not located in the US and prefer not to have to send it back.
Do you see anything on the display at all?
It might be stuck in a half powered-on state. Try holding JUST the power button for over a minute. If you see the Essential logo, hold down Vol-.
Maybe out of batteries?
Your best change is to somehow get to the bootloader so you can run a flash-all.bat from one of these: https://forum.xda-developers.com/essential-phone/development/stock-7-1-1-nmj20d-t3701681
You need to make sure safetynet is passing. Download this and check: https://play.google.com/store/apps/details?id=org.freeandroidtools.safetynettest
Thanks for the tip.
I guess the logic behind this is that the bootloader checks partitions when locked, if it doesn't match what it expects as stock values, no good!