The DNS-323 uses , a file-sharing protocol that Windows now disables by default for security reasons. The Fix: Open Control Panel > Programs and Features . Click Turn Windows features on or off .
After download, check the (use certutil -hashfile <file> MD5 on Windows or md5sum on Linux/Mac): dns323 firmware 111 download fix
Alternative flashing via TFTP or serial
Before flashing 1.11, the unit must be in a receptive state. The DNS-323 uses , a file-sharing protocol that