huawei honor 3x wont run.

when i turn on the phone noting shows on .only consistent vibrate. once i flashed its firmware by SP flash tools and it worked. but after two weeks when i tried to turn on it ,some errors appeared ,such as contact has stop,phone manager has stop...

i tried to reset factory it but it could not wipe cash .

again i flashed that same firmware by SP flash tools , an it showed OK.

but after that the phone did not run at all.

it only vibrates until i remove the battery .

nothing appears on the screen .

what can i do to fix it?