: Navigate to Main Menu > Info > System > Version to check your current build date.
to download the datasheet and manual, which provide setup instructions and detailed feature lists. Firmware Downloads cpunr4k2161v2 firmware download top
: After the device restarts, go to Settings → System → Maintenance and select Factory Default . This is a mandatory step to ensure the new firmware operates correctly. Specifications Overview Long text: "cpunr4k2161v2 firmware download top" 4