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Parameters are missing from firmware error

I am starting a build I have a windows 10 PC running QGroundControl v4.1.1, a Raspberry PI with the the companion image v0.0.25 and a Pixhawk 2.4.8 with the Ardusub v4.0.2.

I constantly get the error " Parameters are missing from the firmware. You may be running a version of firmware which is not fully supported or your firmware has a bug in it> Missing params: 1:r.BATT_FS_LOW_ACT, 1:r.BATT_FS_LOW_VOLT, 1:r.BATT_FS_LOW_MAH"

Is there something I am missing or should I be running another version of the firmware?

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Hi @Paul_461,

This is a bug. The parameters at not exposed by the firmware until you setup the power module.
Go to the power tab to set it up and the warning will go away: