jet_kay,
A quote from BT139-046:
"Since “PRIMUS EPIC®” Flight Software release 4.8.0 installation is
mandatorily required for the four axis autopilot kit, part I of this
bollettino provides the necessary instructions to perform the software
upload."
Version 3.6 may work with it, but according to the BT, it ain't legal. What Agusta does, and what their customers have to do, are sometimes different
