A new version 2.1.1 of Samsung Kies for Windows is now available for free download, if you want to upgrade your Samsung phone/tablet firmware to the latest official version then you should download Kies from the download link below. Kies can also be used to manage contacts and for backing up your device.
Download Kies 2.1.1 for Windows for both 32 Bit and 64 bit OS
Download link. Filename: Kies_220.127.116.1124_17_6
Compatibility: Windows 7, Windows Vista and XP.
Update: New 64 bit Kies for Windows 7, released on April 14, 2012
Latest Kies Download link for Windows.