Hi, here, I have a habit of keeping ALL the firmware in stock, for this kind of problem precisely;)
http://www.k-upload.fr/afficher-fichier-2018-12-24-130034350antminerd320.gz.html ( Antminer-D3-201711201715-0M.tar.gz )
in view of the practice of bitmain, in my opinion, you can not reflash another firmware ... just try
It does not work, I get the same message "Cannot find Signature!!!", it's really annoying http://www.k-upload.fr/afficher-fichier-2018-12-24-130034350antminerd320.gz.html ( Antminer-D3-201711201715-0M.tar.gz )
in view of the practice of bitmain, in my opinion, you can not reflash another firmware ... just try
Any suggestions?