Itunes Error 50 - 56 - Phone Stuck On Recovery Mode

Hi Everybody.

I have an iphone 6 plus who has touch problem.

The client put wrong code more times, and there is a message on screen "Connect Itunes". First i change touch IC and phone become working ( i mean to say touch screen) after then, i connect iphone to itunes in recovery mode and try to restore, but after some minutes, i have unknown error 50 and sometimes 56.

Itunes version is updated, i try also to change the pc, but the problem is same.

I try also download OS manually and try to resotre it, but nothing change.

Any suggestion plz :)

Thanks