If the installer warns you that the version is incompatible, double-check that you don't actually have the V1 hardware. Conclusion
: CP Plus often provides the ConfigTool or mobile apps like gCMOB (Android) and iCMOB (iOS) to manage and sometimes trigger remote updates. How to Upgrade the Firmware cpunr4k2161v2 firmware download top
Given the niche nature, updates are rare—maybe once every 1–2 years. The “top” version might be from 2023 or 2024. If you see a 2025 version, verify its authenticity carefully. If the installer warns you that the version
In these forums, verified members share direct links to factory firmware images. The "top" pinned thread often contains a Google Drive or Dropbox link maintained by a moderator. As of this writing, the latest recommended version is cpunr4k2161v2_fw_2.2.0-top.bin (dated June 2024). The “top” version might be from 2023 or 2024
Look for a string like FW_CPUNR4K2161V2_2.1.8 or similar. The numbers after the underscore indicate the build. The version would typically be the highest numerical release (e.g., 2.2.0 over 2.1.9).
: Download the firmware .bin or .update file and save it to the root directory of your USB drive. Perform the Upgrade : Insert the USB drive into the NVR's USB port.