Make sure it is in MSC mode. Simple devices like stereos cannot use MTP.
Also you may have to remove the SD card, as simple some devices get confused if one USB device has two drives (athough this is perfectly legal per the spec).
Make sure it is in MSC mode. Simple devices like stereos cannot use MTP.
Also you may have to remove the SD card, as simple some devices get confused if one USB device has two drives (athough this is perfectly legal per the spec).