Software update reboot loop
MacBook Pro continues to reboot constantly during software update mode. Computer boots to login screen, enter password, software begins to install, 40 min left, at 28 min, computer shuts down and starts the cycle all over again. Over and over again. This is a new MacBook Pro. Tried option+command+p+r. Tried booting into safe mode by holding down shift key. Nothing seems to work.
Any help is appreciated. Thanks, Robert