If you’ve updated your QNAP NAS firmware and your cameras have stopped recording or communicating with your NAS, it’s possible that the update has affected SMB services. To check if SMB services are still available on your NAS, you can SSH into the device and type in “smb2status”.
This will display the status of SMB services on your NAS and help you determine if it’s the cause of the connectivity issues with your cameras. If SMB services are disabled, you can enable them through the Control Panel in the QNAP web interface.
In case the issue persists, you can contact QNAP support for further assistance. Remember to prioritize security and keep your devices up-to-date to avoid any security vulnerabilities that could put your data at risk.