A method for establishing a first secured communication channel between an administrative agent in a device and a distant server, the device comprising a secure element communicating with the administrative agent, the secure element being administrated through the administrative agent by the distant server, the administrative agent being administrated by a third party server through a second secured communication channel, the distant server and the third party server being connected through a third secured channel. The third party server requests, from the distant server, an operation on the secure element and a one-time PSK. The distant server sends, to the third party server, the one-time PSK. The third party server sends, to the administrative agent, a triggering message including the one-time PSK. A TLS-PSK handshake is performed between the administrative agent and the distant server with the one-time PSK to establish the first secured communication channel.