That setup is now, and still only first 2 channels are Dshot
So both of those set to 0?
I downloaded fw from website and do full chip erase before installing. i will try to install fw again.
Note there is a specific version for v4 - make sure you get this one rather than the v3 one
Yes i download for V4, now its say no need to update already on board
Should i try 4.5FW instead of 4.4.4
Yes try it - it might make a difference
Its seems to work on 4.5 beta
Now there is onother problem 
Mot 4 wont start, i try it in motor tab on any throttle. just start cw little then ccw little and stops. its like getting some short pulses then stopâŚ
I got it working, for some reasson now in online configurator rear motor is readed as ESC 3 not 4, and only see 3 escâs instead of 4⌠refleshed again and it works. Thank for your help guys
In the new version, logging in with enabled bidirectional dshot stops working. As an example, I brought up the rpm graph of the motors, which shows the beginning and a couple of seconds of the log that managed to be recorded. Then the log is cut off.
Frame: QUAD/X_REV
RCOut: DS600:1-4 PWM:5-9
speedybeef4v4 00390046 32325003 2031394D
ChibiOS: 6a85082c
ArduCopter V4.5.0 (53ad2c2a)
Does the flight controller reboot?
Probably not. Since I didnât notice it during the flight
So maybe a logging problem?
It seems to me that it is related to the distribution of dma. Because passthrough dshot doesnât work either
Can you post a full log?
Disruptions in engine sounds can also be heard during flight.
https://filetransfer.io/data-package/A9Bh1WeF#link