High latency mode

Hi! Im trying to use high latency mode on MP 1.3.74 for 2400 baud rate with cube but i cant find the option on action screen

Perhaps because 1.3.74 is a four years old version… try latest beta.

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Do you have any idea what number of version I can do High latency mode?

1.3.81, i.e. the latest.

I’m looking for the oldest if you know

1.3.80 for the handy Do Action button, as per MissionPlanner/ChangeLog.txt at master · ArduPilot/MissionPlanner · GitHub.

Why would you want to use an older version though?