QMobile I6 EMMC Readonly? Solution???????

i have two phone which is infected with virouse after write firmware it stuck on logo and and now flash successfully but still stuck on logo. i flash it with sp tool too but same. When i erase nothing happens mean set is still turn on and stuck on logo after full erase that is why i think its emmc is read-only. its cpu is MT6285. Any body have its solution?????????