How to change firmware?(Global to Chinese)

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2017-06-08 20:28

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I'm using m3 note M681H model flyme 6.7.4.11G beta firmware, can I update or use flyme 6.0.2.0A version?
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because I tried to update A version but that show firmware  corrupt (save update.zip to root directory on your device)
plz tell me what to do or what should I do?