@kuzu92: One thing missing from your steps is ensuring the device is turned off before trying the factory reset. The factory reset won't happen unless the device starts from off.
Hold the power switch in the off position for at least 10 second. You won't see any screen changes when you do this. The hold the light switch down while turning it on. The LED near the switch should start flashing. When it does, release the switch.
How did you upgrade the firmware? Was it automatically via the WiFi or desktop app? Or did you sideload it?
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