My device is still bootlooping even after a successful firmware flash. What now?

If a clean firmware installation with a green confirmation flag fails to break the bootloop cycle, you are highly likely dealing with a physical hardware failure. The most common hardware causes are a failing Lithium-ion battery unable to maintain stable voltage during peak boot draws, a physically stuck internal power button flex ribbon, or degraded UFS/eMMC storage chips on the motherboard. At this stage, your device requires physical inspection by an advanced micro-soldering technician.