Most users make the mistake of Googling "CP Plus DVR firmware download" and clicking the first result. Do not do that. Here are the sources:
Protects against vulnerabilities and unauthorized remote access. Performance Stability: download cp plus dvr firmware better
Struggling with a glitchy DVR? Learn how to download CP Plus DVR firmware better. Avoid fake files, match your hardware version, and update safely for optimal performance. Most users make the mistake of Googling "CP
: Format the drive strictly to FAT32 . Files on NTFS or exFAT drives will typically not be detected by the DVR. match your hardware version