From:
http://uk.samsungmobile.com/supports/softwaremanuals/softwareUpdate.doDESCRIPTION:
----------------
Phone Software Update
Using the Phone Software Update add-in to PC Studio, you will be able to make sure your phone is running the fastest, most stable and feature rich software available. You should check for new updates regularly to stay up to date.
Download it here:
http://downloadcenter.samsung.com/downloadfile/ContentsFile.aspx?CDSite=SSCttFileID=1443171&CDCttType=SW&ModelType=N&VPath=SW/200704/20070427072916031_SoftwareUpdater_312_GD6.exe&ModelName=SGH-Z720After the installation is complete, you should see the 'Update Phone Software' option inside PC Studio as shown in this screenshot:
