So after an update my phone won't boot, it starts with the flyme logo and the bottom loading circle, then it starts Optimizing apps and when it reaches 100% it shows "System Booting" and at that moment the circle stops spinning, the phone freezes and reboots. When it does, it reboots even before it starts Optimizing apps. I can only get it to enter Fastboot mode where it says it has a locked bootloader and it's rooted. Strange thing is when it's rebooting I can't make it shut down completely by holding down the power button. Also, my pc doesn't recognise the device when in fastboot mode. Any way I can hard reset the device and bring it back to life?