I changed the sound file in a SP F7 from passenger to freight. The upload seems to work fine, as as the correct sounds are present, but the engine will not function properly. It will startup and shutdown. On startup lights do not come on. When speed is increased from to 0 to 1 it takes off at full speed, moveing back to 0 and it stops. Tried both feature and factory resets but does not help. What may have gone wrong?
Ed