NEED HELP - How to unbricked Lenovo S920 withoutPC?

Recently I installed miui ROM on Lenovo S920 without flashing China ROM first, then my phone's got bricked. When I try to restore backup, this is what I got:

Restoring data...
E:format_volume: make_extf4fs failed on /dev/block/mmcblk0p8
Error while formatting /data!

I tried to fix permission and still failed on mounting data.
Now Im stuck on Boot logo and CWM.
Can Anyone help me to resolve this without PC? I have problem with usb connector on my Lenovo S920.
Thanks a million.


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