how can i awake w810 dead after flash

[marn]

hi mates
i flashed my 810 an unlocked now its dead only flashing white screen

if the screen turn on/off after flash it very possible the gdfs phone become damage if you have backup from it write it by setool2lite and dont have it use from setool2(box) to write new gdfs (the frist reflash your phone by another firmware and this stage dont work do up stage.dont forget you must choise model phone for cid49