Originally Posted by slvrsplsh
Is it possible that it is irreversibly bricked?
You cannot brick a Sony reader "irreversibly". Well, you can, but in all probability yours is not the case. Your battery may be depleted, so it makes sense to hook the unit up to the wall charger (most micro-USB phone chargers would do).
You need to press RESET (you see the little pin hole on the bottom? give it a little push with a staple end), then start holding the HOME and MENU buttons, and then turn the power on (power button). The reader will reboot. After the "thermometer" is half the way through, stop pressing the HOME and MENU buttons.