To copy them from /device to /sdcard and also had busybox installed. Was bought by a good friend of mine, now he upgraded to S3 and his old S2 went to me, i think it was rooted, had superuser and acces to /efs/.nv_data.bin. So is not stolen/imei blacklisted or other stuff i saw around. I have a S2 phone, out of warranty was bought from Spain under the Vodafone carrier. Press Start button to initiate the flashing process of Android 4.1.2 Jelly Bean. Keep all the remaining options as they are & make sure that Re-Partition box is not checked.
Flash completed Time used: 8.5 s Start Auto Root. Device pit saved to C: BST backup samsung pit GT-I9100 GT-I9100_10.20.07.pit Repair EFS. 1 found dev Manufactory: Model: Hardware: Mode: DOWNLOAD Connect to device.