Do not flash incorrect firmware models onto your hardware, as this can permanently brick the device. Look at the silver sticker located at the bottom or rear of your recorder. Verify it explicitly states . Step 2: Prepare a Compatible USB Storage Drive
Insert the flash drive into one of the available physical USB 2.0 interface ports on the NVR chassis. cpunr4k2161v2 firmware download link
Do not flash incorrect firmware models onto your hardware, as this can permanently brick the device. Look at the silver sticker located at the bottom or rear of your recorder. Verify it explicitly states . Step 2: Prepare a Compatible USB Storage Drive
Insert the flash drive into one of the available physical USB 2.0 interface ports on the NVR chassis.