Vitreous

My printers name was reset when I updated the firmware. I used the instructions described in this post (Smithy's reply) and got a response code of 200, not 204. Now my printer is named None and I cant change it. The rename option is greyed out in Cura, and doing the Put/System/Name results in None. It only works in the Multipart/form data mode, not the json/application mode. json/application mode returns "message": "400 Bad Request: The browser (or proxy) sent a request that this server could not understand." Any ideas?