Problem Uptade Firmware v1.11.20

Joined
Aug 18, 2017
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Hi, I i've updated my P3 Adv with Firmware v1.11.20.
From now on, I have the following problem;
Radio channel quality: poor
And the images on my device display arrives with about 10 seconds of delay.
What should I do to resolve, can I downgrade the firmware?

Before upgrade v1.11.20 my P3Adv worked perfectly.

Thank you
 

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