It is provided a method for transferring and managing data packages between a first portable secure element, SE, server implemented in a portable device (100, 200) and a second portable SE server implemented in an embedded UICC, eUICC (120, 240), comprised in a user's device (110, 230) which is local to the portable device (100, 200), the first and second portable SE severs comprising Subscription Manager, SM, functionalities, the method comprises the first and the second portable SE servers establishing off-line communication using local data transport protocols in a secured mode, the first or the second portable SE server implementing first transfer functionalities (140) for performing secure transfer of the data packages and the first or the second portable SE server implementing second transfer functionalities (140) for performing end-to-end securing of the data packages after the secure transfer of the data packages.
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