warning pleas don't update your phones or your apple product if it was repaired or had any changes!!!!! error -53 Recently apple brought an update of 9.0.1 and 9.2.0 for iPhones,IPADS, AND IPODS. although apple advertised these updates as a better quality enhancements and some bug fix, many apple users are screwed with this iOS update. i regret been an apple fun for many years and i am sure many of you are out there, this time apple seems cutting its relation with all end users. an iOS 9.0 and above update is not a security or quality enhancment update, but it is an update that detected changes in our phone, especially our touch id sensor and other third party repairs. a couple months ago, many apple funs changed their iPhone 6 and 6 plus home button with a different color of an after market home button, some of these phones home button get switched in third party during repairs, and some are to look better while others are worn out. today, all those iPhones are useles where you can't do anything at all, and this happens due to their latest update. the main reason apple released this update is not for quality or bug fix, but to sell more phone and to close third party businesses. this iOS update will affect so many apple products and there is no ways to get your cellphone fixed nor your data out unless you had it on your iCloud or pc. this is a major company defect which is implemented intentionally to users and third party business, and hopefully they will be sued for this un ethical and immoral business. in addition, iOS 8.4.1 is also removed from their server so that you will not downgrade it your phone. error 53/ 3194. i was in a hurry sorry for my grammar. causes of iOS update failure. 1. any kind of repair in third party. 2. replacement of touch id (home button) 3. any un usual change 4. etc symptoms of this iOS update failure (error 53) 1. update through wifi leads a failure in installation 2. restore/ update through iTunes results error 53. 3. phone stack in apple logo with half updating bar. 4. phone may not downgrade. solutions. 1. for those who are under warranty stacked in error 53 (iOS update/ restore) i suggest you go to apple store and ask to your phone to get replaced. 2. no solution (zero solution) for those who are out of warranty and already stack during update. 3. those who haven't update, pleas don't update it you will loose your phone and your valuable data. value of your phone after error 53 is zero.