<<if your current flash was installed via a distro release package then I would recommend you un-install that first.>>

I've done things the wrong way round then as I had a look for version 10 earlier. So, how do I uninstall version 9 (which is the one I actually have with this distro package whatever it says) before upgrading? I have looked in Synaptic but the only version that comes up is 10 now. Thanks. Bev.