Abstract: There is described a method, apparatus and a memory storing a computer program that operates to back-up data on a computer readable memory; and responsive to receiving a restore request to select a subset of the stored back-up data for restoring to a device based on operational capabilities of the device. In various embodiments, the operational capabilities can be determined from device capability indications received from the device which are used to select individual files of the back-up data set; security hashes on individual files can be generated, and sent to the device for each file of the subset; and/or the stored backup data is from a first device and the subset is restored to a second device based on operational capabilities of the second device which differ from those of the first device (for example, language capabilities of a multi-lingual software package).