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palmOne is offering a software update with performance and reliability enhancements for the Treo 600 smartphone.

The software update is free. There are links to downloads for Treo 600s that are used with specific carriers. A step-by-step process will help you back up the data on your smartphone, update your device with the new software and restore your data back to the device.

At the conclusion of the process, users will receive an offer for a free copy of Handmark's Backgammon.

Top U.S. Smartphone Platform

Several operating system platforms, including Windows Mobile, Symbian and the Palm operating system, are battling it out in the nascent smartphone market. While the Palm platform isn't a major player in most of the world, a report last month by the NPD Group places it as the leading smartphone platform for the third straight month in the United States.

According to NPD, Palm OS smartphones this March exceeded Microsoft and Symbian Series 60 market share combined. NPD's data on the U.S. smartphone market gave the Palm OS a 47 percent market share, an increase of 13 points from January. Microsoft (the combination of Pocket PC Phone Edition and Microsoft Smartphone) and Symbian Series 60 tied with 20 percent market share each. Series 60 is the most common type of smartphone based on the Symbian platform.

NPD said rising sales of the Treo 600 smartphone from palmOne and continued success of Kyocera and Samsung Palm OS smartphones contributed to the Palm platform's success.