Schubert C5 | sena sc2 | first time use | no sound

Bought Schubert C5 and sena sc2 last week.
Followed all step by step instructions to place sena sc2 in schubert c5.
I hold multi function button is backhead peace for couple of seconds.
It turns blue but i do not hear 'hello'.

Does anyone know what I am doing wrong?
Or is one of my products (helm or sena) already broken?


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