Yes, I had replied, long ago.
TL;DR: the phone itself is not defective, the design is - even when it was a current shipping model.
I indicated that if I had time to set up a server on the phone network to setup an sftp service to reload the config files; I would do so.
Far too much work to enable a phone that should be resettable from the menu, like the earlier 3xx 4xx series.
chuck