I was running cyanogen mod 13 on mi3. Now i have installed xiaomi.eu_multi_MI3WMI4W_6.6.30_v8-6.0.zip. Due to low volume of speaker and headphone, i tried to edit /system/etc/mixer_paths.xml and changed values from 84 to 91. This method used to work for CM 13 but it is not working for miui8...