first i wrote sudo gainroot then i started the player. i typed in terminal alsamixer -c0 and turned on FMTX Fuction and pushed esc. Then i typed /usr/bin/fmtx_client -p 1 with no errors and then /bin/echo 118 > /sys/class/i2c-adapter/i2c-2/2-0063/power_level with no errors after that i typed /opt/lfocus/v4l2-ctl -d /dev/radio0 -f 88.1 This gave me a big list of commands :/ The fm-transmitter icon were visible and the music was playing all the time. Still i didnt get anything out in two radios that i tried. I moved the phone everywhere near the radio. After that i went back to alsamixer -c0 and there i raised the Line dac to 100. Still nothing I think my fm transmitter is broken