Putting a new home buttons will not work for the old device that already use the scan is any part that change must reflect to the old is,, remember that the home button is a over use horse and can time out any second?, that home button is press a billon over time over use and wear out easily so be very careful.. ask customers to remove fingerprints id without the signature sycon with Apple serve and change the scans id home button that will work !!!is always time out without finish the scan so you will have to wait and wait??the device must remove the owner id and sycronnise with Apple data reset the home is one way is must be sycro with both end!! I hope it help