Method for transmitting an existing subscription profile from a mobile network operator to a secure element, corresponding servers and secure element

A method for transmitting a subscription profile from a Mobile Network Operator (MNO to a secure element cooperating with a terminal, said secure element being pre-provisioned with a temporary profile comprising a unique identifier, a first Mobile Country Code (MCC) and a first Mobile Network Code (MNC), said method comprising:

• Transmitting from a Point of Sale (POS) of said MNO said unique identifier of said secure element to a Subscription Manager Data Preparation (SM-DP);
• Creating or reserving said subscription profile at said SM-DP;
• Provisioning in a Discovery Home Subscriber Server (D-HSS) server said unique identifier and a temporary International Mobile Subscriber Identity (IMS) comprising a second MCC and a second MNC;
• Provisioning in a Home Subscriber Server (HSS) of said MNO said temporary IMSI and an ephemeral key;
• at a first attempt of said secure element to connect to said D-HSS server with its temporary profile, exchanging data in signaling messages between said secure element and said D-HSS server for provisioning said secure element with said temporary IMSI;
• and
• at a next attempt of said secure element to connect to said MNO network with said temporary IMSI following said first attempt, open an Access Point Name (APN) and send from said SM-DP to said secure element said subscription profile.