"Samsung has released a software upgrade for the SGH-i637 (Jack) which is recommended to be installed. This update includes an upgrade to Windows Phone (Mobile) 6.5 and numerous software enhancements. The update may take between 5-10 minutes to complete if the system is already set up."
Yay! There's a Samsung Jack 6.5 upgrade out for your handsome and stylish Windows Mobile phone. It's always good when companies don't allow devices to become obsolete due to an upgrade. The site not only has the 6.5 download but it gives detailed image based instructions describing the upgrade process. So what are you waiting for? Head over and bring your Jack up to speed. Oh, and let us know how it goes and how you like it.