"2nd : i restart my site from zero :)) as usual for update or upgrade it"
There's no reason to start from scratch just because a new version was released. You can upgrade, though it may take more time if you have applied mods that require changes to files.
thank you mangussoft , but it was many errors in the site and problems plus it was many changes on files i was made it for seo and many things else and all of it now removed after i reinstall new verision and i will try to upgrade without restart any more , thanks for youur replay
There's no reason to start from scratch just because a new version was released. You can upgrade, though it may take more time if you have applied mods that require changes to files.