AT&T has been sending out SMS messages to force Treo 680 users to update to the latest firmware. AT&T says without updating users will no longer be able to use the Treo 680 on their network. The Treo 680s are a couple years old but still good for basic smartphone operations (contacts, calendar, etc.) so users will want to update their firmware to stay compliant with AT&T.

Users can download the latest update at the link below.