As of mid-2026, firmware updates are distributed periodically. The best way to secure the is through official CP Plus channels:
The process usually takes 3–5 minutes. The system will reboot automatically.
: The primary hub for all official updates. You can filter by product category or search for "CP-UNR-4K2161-V2" on the CP Plus Firmware Page Customer Support Request cpunr4k2161v2 firmware download link
For example, a known firmware update for related CP Plus DVR models was hosted at: https://www.cpplusworld.com/prodassets/firmware/afb31346-470a-41b9-a3e6-65b9331bcb07.bin (This specific file is for other DVR models and not recommended for your NVR unless confirmed.)
Last updated: May 19, 2026
Updating your CPU NR4K2161V2 firmware is a relatively straightforward process. Here's a step-by-step guide:
Ultimate Guide to CP Plus CP-UNR-4K2161-V2 Firmware: Download and Installation : The primary hub for all official updates
: Utilizes H.265/H.264 dual codec to maximize storage efficiency.
You can check for the latest software and firmware updates on the CP Plus Support & Download Center . You can check for the latest software and
Hit the selection path button, choose the raw firmware update target file directly from your local drive storage, and click Upgrade . Critical Safety Protocol Checklist
Open , verify your target NVR is showing an active online status indicator, and enter its device settings page. Navigate to the System Maintenance / Upgrade screen panel.