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export gpio137 gpio138 gpio139 gpio170 gpio64 gpiochip0 gpiochip128 gpiochip160 gpiochip192 gpiochip32 gpiochip64 gpiochip96 unexport
root@localhost:/sys/class/gpio#
</pre>
Export Gpio137 if you don't have it:
<pre>echo 137 > /sys/class/gpio/export </pre>
Set GPIO 137 to low value to reset bluethoot:
<pre>echo 0 > /sys/class/gpio/gpio137/value</pre>