How to Fix iPhone Gets Bricked After iOS 11/12 Update/Downgrade/Jailbreak
I think you need a powerful assistant to help you get your iPhone back on track. iOS System Recovery
is your best choice. iOS System Recovery has made it easier as never before for users to get iPhone, iPad and iPod touch out of white screen, Recovery Mode, Apple logo, black screen, and fix the issues when your iOS device perform abnormally. It will not cause any data loss while repairing the iOS system issues.
Importantly, it supports almost all Apple devices on the market, including iPhone of all types. In the process of repairing the system, this software will not cause any loss of data in your phone. Whether it's contacts, audio, video and application data, and so forth.