The Iphone Iphone Could Not Be Restored. An Unknown Error Occurred -4045- Jun 2026

: This is the fastest way to break a restore loop or exit a frozen state. iPhone 8 or later : Quickly press , quickly press Volume Down , then press and hold the Side button until the Apple logo appears. iPhone 7/7 Plus : Hold the Volume Down buttons together until you see the Apple logo. iPhone 6s or earlier : Hold the Top (or Side) buttons simultaneously. Check Hardware Connections Apple-certified cable

“The computer attempted to write a critical firmware file to the iPhone, but the connection was severed, or the computer’s security software blocked the transfer.” : This is the fastest way to break

This specific error code, while not as infamous as Error 4013 or Error 9, is a significant headache for users. It often leaves the device stuck in Recovery Mode or, worse, renders it unresponsive. If you are currently staring at this error code, take a deep breath. This comprehensive guide will walk you through the mechanics of why this happens and, more importantly, how to resolve it. iPhone 6s or earlier : Hold the Top

Here are the most effective solutions, from most likely to least likely to resolve the issue. If you are currently staring at this error

In less than 1% of cases, error -4045 indicates a failing NAND (storage) chip on the logic board. How to tell?

Use an official Apple Lightning or USB-C cable. Third-party cables often fail during the high-data-transfer requirements of a restore.