Default [Q] Need backup of mmcblk0 xperia 4.1.2

Anyone can help me to upload backup of mmcblk0 XPERIA L 4.1.2 only
Because my phone hardbrik .
And I think this tutorial

also work at soc Qualcomm msm8230

Size of backup mmcblk0 about 130mb
because only backup boot sector of emmc..

thanks before and sorry for my bad english..