Release Notes > ThingWorx SCM Edge Extension for the ThingWorx Edge C SDK Release Notes
  
ThingWorx SCM Edge Extension for the ThingWorx Edge C SDK Release Notes
The ThingWorx SCM (Software Content Management) Edge Extension supports the ThingWorx Edge C SDK and the separate ThingWorx Software Content Management (SCM) extension that is available for the ThingWorx platform. The SCM Edge Extension for the ThingWorx Edge C SDK enables customers to provide reliable software and firmware updates through package delivery and management. SCM users can create a software package that contains a file that can be downloaded to one or more devices from a ThingWorx platform. Additional features of this extension include support for a whitelist so that only specified script executables will run a script sent to the device in an SCM package as well as tools to create the files for and apply a digital signature to an SCM package.
For details about the extension digital signing, setup, and examples, see the ThingWorx SCM Edge Extension Developer's Guide that is provided in your distribution bundle or the section on the SCM Edge Extension for the C SDK in the ThingWorx Edge SDKs and WebSocket-based Edge MicroServer Help Center on the PTC Support site..