A method for loading a subscription into an embedded security element of a system configured on a chip of a mobile end device, wherein the system comprises an application processor, a non-volatile memory and a secure processor. The application processor and the secure processor can access the non-volatile memory via a bus. In the process, the subscription is loaded by a provisioning service into the non-volatile memory, so that the secure processor can load the subscription from the memory and execute it. The provisioning service is executed by the secure processor and the subscription is loaded by the provisioning service into a region of the non-volatile memory readable and writeable only by the secure processor.