JordThat's really an unfortunate result. I fear that it my unit may share the same fate, but I am yet to RMA it.
Sounds like what happened to my phone, after it received the newest security update and it rebooted. Mine died completely. I have sent it back to the place I bought it from, who sent it to Asus. Asus said after extensive testing what I dreaded: my phone was dead. They couldn't restart it either.
So Friday a brand new ZenFone 8 was sent to me, a 16GB version even (mine was an 8GB version). I've been setting it up since Saturday and only started using it tonight. Fingers crossed when that update went on, it worked this time. 😁