Hi,

before posting on this forum, i checked on internet for this issue and found several cause and solutions.
i tried several of them but till now none of them worked.

when i try to update fedora 19 to fedora 20 (fedup --network 20) i get the following error message:
finding updates 100% [=======================================================================================================================================]
verify local files 100% [====================================================================================================================================]
warning: /var/tmp/system-upgrade/rpmfusion-free/packages/rpmfusion-free-release-20-1.noarch.rpm: Header V3 RSA/SHA256 Signature, key ID ae688223: NOKEY
Importing GPG key 0xAE688223:
 Userid     : "RPM Fusion free repository for Fedora (20) <rpmfusion-buildsys@lists.rpmfusion.org>"
 Fingerprint: 0017 ddfe fd13 2929 9d55 b1d3 963a 8848 ae68 8223
 Package    : rpmfusion-free-release-19-1.noarch (installed)
 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-rpmfusion-free-fedora-20

Downloading failed: Didn't install any keys

i tried:
1. yum --enablerepo=updates-testing update fedup
but it didn't help

2. rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-rpmfusion-nonfree-fedora-20
but it didn't help

3. fedup-cli --network 20 --nogpgcheck
install things and reboot with error. After complete restart, uname -a still shows fedora 19 as version of fedora :(

4. rpm -qi fedup
it returns:

Name        : fedup
Version     : 0.8.0
Release     : 3.fc19
Architecture: noarch
Signature   : RSA/SHA256, jeu. 12 déc. 2013 16:22:34 CET, Key ID 07477e65fb4b18e6
Source RPM  : fedup-0.8.0-3.fc19.src.rpm

so it is the latest version of fedup according to documentation.

therefore what is wrong ?
thx.