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Nov 19, 2019, 07:28 AM
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no RX input after flashing DYS F4 Pro AIO flight controller

I'm trying to upgrade the DYS F4 Pro AIO to a later betaflight version, the actual version is OMNIBUSF4 (OBF4) 3.3.3 May 31 2018.
I'm using a Frsky XSR receiver soldered on UART1, Serial RX port is enabled but there is no more input from the RX after flashing to 3.5 or upper versions.
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Nov 19, 2019, 09:04 AM
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Did you selected proper serial protocol in config?
Nov 19, 2019, 08:23 PM
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Yes, serial setting is right.
With default settings except for serial, motor 3 is spinning when I plug a battery.
Dec 02, 2019, 07:15 PM
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Flash AGAIN, sometimes first write doesn't work well. This happened to me 3x on an SPracing F3 card. The 2nd flash cured its ills.

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