Hey guys have you tried to do this:
Install backupmenu, connect your phone with your computer via usb, make a partition on gparted of the emmc, dd the image(after extracted on the hard drive of the pc) to this partition...

I think that it works(I did it), but I don't know what am I supposed to do with uboot to get it work! What else should I do and what should I write to the .item file to get it working?