In FlyControl modify and reload the MDrive_34_1.mxt file.
Close Lasit software
In FlyControl folder you will find all mxt files: Y_MDrive34_1.mxt, X_MDrive34_1.mxt, Z_MDrive34_1.mxt and so on.
Make a backup of the mxt file relative to the Axis where you need to invert direction
Open the original file
Look for rows where you have LB M2 and N2=512-I5 or N2=I5-512
Invert, i.e.: N2=512-I5 to 512-I5 or vice versa
Then, after saved, open FlyControl
Select the axis to change
Click on Upload and wait
WARNING: If you have power loss during uploading you may break the motor