That is a very weird way to backup a partition. Please instead try the following:
$ adb shell $ su $ dd if=/dev/block/platform/dw_mmc/by-name/EFS of=/sdcard/efs.img $ exit $ adb pull /sdcard/efs.img To restore use Heimdall or Fastboot. You can maybe do it running by: $ adb push efs.img /sdcard/ $ adb shell $ su $ dd if=/sdcard/efs.img of=/dev/block/platform/dw_mmc/by-name/EFS $ reboot You can also use adb root instead of su if not available. _______________________________________________ Replicant mailing list Replicant@osuosl.org https://lists.osuosl.org/mailman/listinfo/replicant