bladerunner
download the 13 firmwares
here:
http://www.mympxplayer.org/full-firm...res-df652.html
then upgrade your firmware to 9.0.43_1
that will work the external speaker.
Anyway I am using the s1res tool 2.0 not the 3.x one, actually it works for my glacier mp4, maybe you can try it.
s1res tool 2.0 is actually free, but you will for 1 minute to use it