Dell Chassis Management Controller Version 3.0 for Dell EMC PowerEdge VRTX User's Guide

For VRTX CMC 2.0 and later, the firmware includes a signature. The CMC firmware verifies the signature to ensure the authenticity of the uploaded firmware. The firmware update process is successful only if the firmware image is authenticated by CMC to be a valid image from the service provider and has not been altered. The firmware update process is stopped if CMC cannot verify the signature of the uploaded firmware image. A warning event is then logged and an appropriate error message is displayed.

Signature verification can be performed on VRTX firmware versions 1.2 and later. For firmware downgrade to VRTX versions earlier than 1.2, first update the firmware to a VRTX CMC version that is later than or equal to 1.2, but earlier than 2.0. After this update, firmware downgrade to earlier, unsigned VRTX versions can be performed.