• https://www.jbl.com/wireless-headphones/EVEREST+ELITE+750NC.html
• https://www.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw0fad6ec6/pdfs/JBL_%20Everest_Elite_750NC_QSG_Multilingual.pdf
• https://play.google.com/store/apps/details?id=jbl.stc.com
• http://storage.harman.com/Everest/USBTool/Elite750NC_Upgrade_Index.xml

http://storage.harman.com/Everest/JBL_Everest_Elite_750_SDK61_SVN741_v0.0.8_BOOT.bin http://storage.harman.com/Everest/JBL_Everest_Elite_750_SDK61_SVN769_v0.1.9_APP.bin http://storage.harman.com/Everest/JBL_Everest_Elite_750_SDK61_SVN769_v0.1.9_RSRC1.bin

sudo apt-get install pulseaudio-module-bluetooth

pactl list short sinks
alsa_output.pci-0000_00_1b.0.analog-stereo	module-alsa-card.c	s16le 2ch 44100Hz	IDLE
bluez_sink.18_93_ff_ff_ff_ff.a2dp_sink	module-bluez5-device.c	s16le 2ch 48000Hz	RUNNING

@TaG: PulsE PulseAudio

sudo aptitude  install pulseaudio pulseaudio-module-bluetooth pavucontrol bluez-firmware

killall pulseaudio
pavucontrol 
pactl list short sinks
0       alsa_output.pci-0000_01_00.1.hdmi-stereo        module-alsa-card.c      s16le 2ch 44100Hz       IDLE
1       alsa_output.pci-0000_00_1b.0.analog-stereo      module-alsa-card.c      s16le 2ch 44100Hz       IDLE
2       bluez_sink.18_??_??_??_??_??    module-bluetooth-device.c       s16le 1ch 8000Hz        RUNNING

Failed to change profile to a2dp