Hello,
i have upgraded my dns-320 to firmware 2.02b01 and now i get issues with FTP.
before upgrading, i could suspend (abort) a FTP file upload to NAS and resume it later.
i could replace a file by the same file with any issue.
for example, i could resume upload of a large file and now it is not possible any more.
i get an error 553, Users may not upload files.
note :temporary files like .pureftpxxxxxx are not created any more by the NAS.
To success the upload i have to delete uncompleted file/files on the NAS ftp, deconnect and reconnect.
So it is possible to replace the file on the NAS with FTP client but still impossible to resume it.
may be d-link technicien could have a look to this issue.
PS : i discovered too late that it's impossible to downgrade the firmware..
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thanks to D-link for precious help