Updating from F9 to F12

[prakhar gaur]

Dear All,

This is my first mail to a mailing list , so if i make any mistakes, Sorry.
I am trying to update my F9 to F12. 
i have to go from F9 to F10, then F10 to F12.
i tried  

$rpm -Uvh ftp://download.fedora.redhat.com/pub/fedora/linux/releases/Fedora/i386/os/Packages/fedora-release-*.noarch.rpm
its says http not found, i checked, the ftp has now been moved to 
http://archives.fedoraproject.org/pub/archive/fedora/linux/releases/10

Then i manually installed both the fedora-release-*.noarch.rpm packages.
now when i try    
$yum upgrade
it prints, 
http://download.fedora.redhat.com/pub/fedora/linux/releases/10/Everything/i386/os/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: fedora. Please verify its path and try again

Note the http is still incorrect,
How do i chance it to, http://archives.fedoraproject.org/pub/archive/fedora/linux/releases/10/Everything/i386/os/repodata/repomd.xml

Thanking you all,

 		 	   		  
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