How to downgrade Meizu m3 note from 5.1.11.0G to 5.1.3.4G?

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2016-11-10 09:44

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Hi there,
I've received an OTA notification to upgrade to 5.1.11.0G for my m3 note. I've upgraded my phone. And I found it is a mistake from Meizu. Please tell me how to downgrade Meizu m3 note from 5.1.11.0G to 5.1.3.4G.
Thank you!