I am about to reflash whole device - that's why I want to backup rootfs. I have done it already in case of optfs (home, MyDocs).

But I want to try - for the last time - uninstalling fcam-drivers. When I use dpkg I still get a message indicating that fcam-drivers are installed and "connected" with blessn900. I can't though uninstall blessn900, as I described in post #4.