How to fix error 53

hello

i bought my iphone 6 second hand from some one.

the touch id doesnt word and i used the phone for over 3 Months.

when i go too the amac (apple ) the seller wants too try reset my phone (itunes) when hé do this error 53 comes.

so i can't reset the phone and Now is the iphone dead ( connect too itunes) i can not use it anymore because the seller from apple want's too reset.

i dont have guaranty so i checked self with All tips on the internet

- replace the Shield behind the lcd with cable.

- the original screen and homebutton touch id is on the phone.

- try too reset without screen and unplug the connector ( touchid)

- the connector front my touchid is damaged button nobody can repair this.

i need helpppppp