No development on this. Android seems to prohibit SMBv1/CIFS access and on top of NFS gives the same result. Tried installing the Samba package for DNS-320L but getting the same result. Since iPhone iOS and Lumia/PC Windows can still access the NAS so the TV/phone Android's is the problem. Anyway, thanks. Resigned to use UPNP of NAS but closed caption is not possible unless IDX captioning is used, instead of SRT.