~via BB (wap.rabroad.com)~Yeah, like 17oobie said I guess we won't know for sure if it works until the day comes. However, it installed successfully and prompted to reboot the device specifically noting a DST update, so I'm assuming it worked. Just make sure you reboot, otherwise it's probably no go. Also, I don't know if this patch will work for other providers, but I don't see why not, as the file is authored by RIM, not T-Mobile, and is located on the BlackBerry website, not T-Mobile's site.