How can i Update suse 10.2

Man you are installing an out of date distro, the current version is 11.0
However, if you insist on using 10.2 add these repositories to YaST

OSS
ftp://mirrorservice.org/sites/ftp.opensuse.org/pub/opensuse/distribution/10.2/repo/oss/

Non-OSS
ftp://mirrorservice.org/sites/ftp.opensuse.org/pub/opensuse/distribution/10.2/repo/non-oss/

Packman
*packman.unixheads.com/suse/10.2/

Guru
*ftp.gwdg.de/pub/linux/misc/suser-guru/rpm/10.2/RPMS/

VLC
*download.videolan.org/pub/vlc/SuSE/10.2/

Look here for more repositories
*en.opensuse.org/Additional_YaST_Package_Repositories

Official Updates are not available any more for OpenSuSE 10.2 and below.