If you provide the printed on the device label, I can help locate the correct official download page.
Subject: Request for firmware cp-unr-4k2161-v2 Device: [Full model name, e.g., CP-UNR-4K2161-V2 NVR] Current issue: [e.g., “device stuck on boot loop” / “need to recover from failed update”] Please provide official recovery firmware and instructions. cp-unr-4k2161-v2 firmware download