Okay....I tried it today following all the great directions from Vern, Larry and Scott. The Dynon program opened the Van's key, it read my equip and listed everything by serial number, servos and all. I told it to download the new 5.3 and it said, "files corrupted, no servos detected". Contact Van's etc. Where did I go wrong....arrrgggg. Guess I'll call Dynon on Monday.