Philips Xenium x588 dead after try downgrading

Hi. I have philips xenium x588 with mt6750. I tried to downgrade from 7.0 to 6.0 its dead. Phone is recognizing in META mode but when i try to flash rom, sp flashtool stay on red bar 100% or sometimes go to step 2 and stay in 0% on bar. Can you help me with repair this phone? I can pay u if you repair it.

Wysłane z mojego LG-H870 przy użyciu Tapatalka