Oops.  Had the USB flash drive in the USB 2.0 Port.  Put it in the 3.0 port and it worked as advertised.
BIOS update warning: bios update failed as bios requires password. please remove password.   The above warning and inability to install BIOS update concerns v. 1.11. However, no password is set in BIOS; my current BIOS version is 1.10.   Is it a bug?
BIOS update warning: bios update failed as bios requires password. please 
remove password.