Having trouble with installing the class 66 sound data have tried all the steps suggested with no luck, have tried the suggestion on installing the smallest sound file the class 08 and that works fine and then try the 66 sound file and still get the same error, I’m using the hm6000 for track power suggested in the hm6000 to hm7000 upgrade and using the hm app on an iPhone 13 pro and it’s a hm7000 21 pin sound decoder any help is greatly appreciated