drivers for wifi broadcom bcm43142

[mk63]

Hi bitsnpcs!

Alternatively you can download the .deb file of the driver using another computer/phone, then insert that media into your offline HP Stream and use it to install the driver.

I downloaded:
broadcom-sta-dkms_6.30.223.271-5_all.deb

Now I can see the driver in Synaptic Manager as installed but my laptop needs the reboot to work wifi.
In live session I cant do this so...

Be sure you save the "Live system create" to the empty USB or you will wipe your current live usb.

After installing the driver I went to:
Manu>System>Systemback
storage directory: /home
Function menu: "live system create" ---- button is not active!!!

"system repair" is active only!

HOW to make my current live usb to contain the installed wifi driver?
I want my LL live media working with wifi connection before I do instalation to hard disk and throw  windows10 to cosmos.
I have to make sure that wifi works fine before I do it.