HELP ME PLEASE!!!!!!

help me, I'm stuck in the usb update menu in Oculus quest 2, when charging and connecting to a PC anyway, the usb update menu turned out so that I didn't notice that the small battery charge and the VR helmet were reduced to 0 percent and now without connecting to a PC or charging, it doesn't turn on, that is, it doesn't heal even if someone It will help, thank you very much.