There is new firmware available for all XC Tracer varios with GPS. The firmware for XC Tracer II and XC Tracer Mini II GPS has now wind estimation enabled. The sentence LXWPW is like LXWP0 but does also contain the wind estimation. And the firmware for XC Tracer does now set forwardGPSSentences automatically in the background, depending on the the output format that has been chosen. This means that forwardGPSSentences will no longer appear in the config file.