If you don’t fancy upgrading Magento 1 through command line, you can upgrade Magento core using Magento’s in-built Magento Connect Downloader.
Mage_All_Latest
Mage_All_Latest
If you login and don’t see any packages, this may be due to the way the site was built.
At the top of Magento connect downloader enter magento-core/Mage_All_Latest
in the in put box, this will install all latest MagentoConnect core packages on top of existing files and will allow future upgrades through Magento Connect Downloader.