c:\adb>adb shell dd if=/dev/block/mmcblk0p31 of=/mnt/sdcard/mmcblk0p31.img * daemon not running. starting it now on port 5037 * * daemon started successfully * /dev/block/mmcblk0p31: cannot open for read: Permission denied ما الحل يا اهل الخبره ؟؟؟