Android

A few months ago I found a dinged up Sony Xperia 1 in a dumpster. It has a password on it that I haven't been able to guess yet. I have spent 30+ hours trying to unlock it, flash firmware, and get to the recovery menu by powering up while holding down the volume down button. If there is anyone out there that has been successful in resetting one of these phones without the password I would love to get some help from you.