fingerprint id fails after screen change

Hi

Greetings from Tweed Heads Australia .

I have a IP6s 16gb that i bought with a broken screen . I tested the fingerprint (home button) function before i removed the screen and it worked properly. Next i replaced the screen being very careful not to damage the home button cable . With the new screen fitted , the fingerprint id does not work but the home button and everything else on the phone works properly.

The phone seemed to know something was wrong because when i was going through the setup process , a message appeared something like" id failed" .

Only thought i had as to the problem may be i need to swap over the home button extension cable as well.However i don't think this is possible,as the cable seems to be well and truly sandwiched into the display.

Anyhow , do you know where the problem may be?

Do you think it is safe to update to the latest ios 10.3 , as i am concerned it may "brick" the phone.

The bricking is my biggest concern . If the id does not work ,i am ok with that. I don't use it anyway.

Warm regards

Richard