Updates often improve support for newer SATA hard drives (up to 8TB) and diverse camera protocols like AHD, TVI, and CVI.

To manually update your DVR, follow this procedure as outlined by Eye Tech Securities and Scribd :

Updating your firmware is essential for maintaining the security and performance of your 8-channel DVR. This Indigo Series model supports high-definition recording and remote viewing through the CP Plus gCMOB/iCMOB mobile applications. Firmware Download Links