Description of problem: Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1.yum downgrade firefox 2. 3. Actual results: erase firefox.x86_64 0:15.0-1.fc17 install firefox.x86_64 0:12.0-1.fc17 Expected results: install firefox.x86_64 0:14.0.1-1.fc17 Additional info: firefox.x86_64 0:12.0-1.fc17 won't launch (but it doesn't really matter).
Fedora don't keep multiple updates in their repos. so the only version available to downgrade to tends to be the GA version. There are some workarounds, like the "local" plugin.