My LG G5 phone is stuck on a screen saying 'Firmware Update'. It has been at 0 percent for hours now and there is a code that says 633A B50. I would have tried to remove the battery, but the bottom piece you pull out with the battery latched on is unfortunately unable to grab the battery because a part that latches broke off a while ago. So now I have a bottom part that can be pulled out, but a battery that is stuck in the phone. What is it recommended I do? I can get a picture if needed. Thanks.