Still doesn't work.
Swisscom helpline is not willing to help and their excuse is it is modem not validated by Swisscom and they are not responsible if their connection is not working with 3-rd party modems. Very costomer oriented service.
On the other side modem that comes with Vivo M package is extremly slow. Despite the 100MB speed I can not do wireless streaming of HD videos from PC to the smart TV.
Also wireless speed transfer is very slow as soon there are couple of devices connected to WIFI (and router is placed in the same room). And of course you can not get newer model from Swisscom free of charge.
Very customer oriented service: you pay for 100MB connection and get a crappy modem free of charge that you can use only to stream youtube and facebook.
You get a better modem and then it is blocked. They do everything to force you to spend another 199CHF for a new Swisscom modem.
I am strongly considering to cancel Swisscom contract and get better connection with Quickline.
At least I get a newer modem that can manage HD format streaming.