You can master reset using hardware keys. To perform a master reset, follow these steps:
no problem, take your time.
yes, this sounds like the firmware has glitched.
your data is probably already lost, if you have a google account it will restore from your back up.
no problem, let me know if you need anything.
does it have reboot system now listed there?
yes, you can try any of those options ans see if it will boot up. If it does you may be okay, if you get it back on be sure and back up your important data immediately.
sorry about that.
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