Yes, software version. This was a known issue on the Hero prior to the upgrade to Android 2.1 // From your home screen - Menu - Settings - About Phone - Software Information - Software Number. If yours does not start with a 2, then you are still on one of the original software builds and not receiving texts was an issue with that version. For more information on updating or checking your Hero's software go to http://sprint.com/downloads or http://community.sprint.com/baw/community/buzzaboutwireless/phones-and-devices/android_phones/hero/blog/2010/11/19/htc-hero-maintenance-releases //
While I was preparing this, I can see others have responded as well. I apologize if this is repetitive.
Sprint is proud to have been named to The Civic 50, an annual survey of America?s most community-minded companies.