Not all USB ports on routers are treated as NAS devices. If yours does not (check your router’s manual), Sonos will not be releasing any update to allow you to use it. 

If your router does, you may need to fix the SMB version in use, which will allow Sonos access. Which version of the Sonos controller you use defines which version of SMB can be used. 

Thanks for reaction

Before sonos updates I could access from sonos app, now i can not. And from computer i do enter usb on my router.

I have sonos2 app, i checked all possibilities nothing works to apply my library. Which smb protocol should work v1 or v2??

I have the sonos soundbar.

Sonos stopped supporting SMB v1 back in May and now only supports SMB v2 and 3. If you are able to update , you should regain connectivity to your local library.

Which make and model of router do you have?