Update EHS36 with T41P?

[SPS]

Is there any chance to update the EHS36 when you only have a T41P?

I use the T41P & EHS36 with a Jabra 920 PRO and have no phone control.
When I set the Jabra to DGSG it doesn´t work anymore, only with Auto detect it works, but when I press the button on the headset it only shuts off and on (blue light on /off), but I cannot take or end a call with the button.