Meizu firmware updating
Press the Volume UP or Volume DOWN button and he POWER button at the same time for a few seconds.
If you have the right firmware the flashing procedure will start automatically and usually will take only a few minutes.
By following these steps you agree that it is you, yourself that chose to follow these steps and I will not take any responsibility for your loss.
Copy the downloaded file 'update.zip' into the removable device named 'recovery' (do not unzip) Tick the top option (system upgrade) and click 'start' Wait be patient.
Apparently, there are workarounds to the issue with specific firmware upgrades.
One is SD card update and the other is Smartphone SP Flash tool from PC.Accordingly, it is only emerging in certain parts of the world including the United States, Australia, France, Russia and more.