Meizu MX4 Flyme 5

I need help! First thing i have mx4, international version. I want to upgrade to flyme 5 beta… But i can’t im on 4.5.6I right now and i cant upgrade, i tried downgrading to 4.0.4I and but ibget firmware corrupt… I even tries downgrading to and then to 4.0.4I but still nothing tried so many thing and always firmware corrupt i want this update badly, so if someone has a solution please tell me, thanks in advance!

@JamesStark tick clear data, not only system upgrade

@JamesStark try updating via recovery mode (press and hold volume up and then the power button). Also make sure the is not damaged by checking and verifying the MD5 value.

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