Take your phone to a Meizu authorised service centre to get it fixed. The Android N update is for Chinese devices only and you have L681H which is a Global device and does not support Chinese firmwares.

sorry my negative vote

Edited by nikoman1987 at 2017-10-10 04:40

I hope you can find a service center to fix it,because i cannot find here in Bulgaria
EDIT: After 4 months i have fixed my meizu 3 days ago without unlocking bootloader and after so many attempts in different service centers i have found the solution : This model needs specific SP Flashtool and specific drivers ,without them,there is no chance of fixing without an MRT Dongle or service center (and it is no 100% sure that they will fix it) So... when i`ve had 2 choices: to throw the phone in the garbage or to try every single driver in the web and do the same thing with SP Flashtool. I am glad that one of my friends have the same phone,so i took all the neccessary files  and flashed it. Now the phone works as good as before bricking with no problem. So the service center is the easiest way,but in my case... they have just wasted my time.If you need help,just ask,i can help you.

Guys dont upgrade to android N it is having serious bugs battery draining only 10 hours battery life better us flyme 5.1.12.0G we can us volte in this ROM

which firmware

Hi i own phone (Meizu m3 note  model L681H LTE -Serial №: L91HVCPD226CA )  after downloading
Flyme 6.7.8.22 beta and phone installation received vertical pixel lines and I cannot work on the phone. at the top, the front camera heats up the display very fast. What should I do to reset the phone.
Please help