Hi friends I told you about after update yum is not working I have got solution.
resolved token no 210
I installed yum forcefully by using command
rpm -ivh --force yum after I updated yum yumex then all updates from fedora are working but updates by rpmfusion are not working. so for this also the above solutions applies find updates using yumex it will download the packages to /var/cache/yum to sub directory rpmfusion-<free/nonfree><-updates>/packages then use rpm -ivh --force <package> if dependencies exists install updates first.