You can download the C100 Firmware from Canon USA at this link.
Designed for the capture of crucial, unpredictable scenes during wedding/event, documentary, news, or wildlife filming, the Continuous Recording Function firmware update for the EOS C100 Digital Video Camera enables videographers to insert metadata markers identifying crucial scenes and moments in their footage while continuously recording to the memory capacity. These markers — for both “in” and “out” points — can be set with the press of a button without interrupting the recording process. These markers are identified in metadata as separate “shots,” and are simultaneously recorded to both SD card slots of the EOS C100 camera.
Firmware Release Schedule: