A: Yes. Non-genuine screen or battery replacements sometimes interfere with the current regulation required during a restore, triggering error 4045.
While Apple does not officially list Error 4045 in its documentation, community reports and technical teardowns suggest several root causes: error 4045 iphone
: Security software (firewalls, antivirus) or VPNs on your computer may be blocking communication with Apple's update servers. USB/Cable Issues A: Yes
: The device is unable to identify or connect to an internal component, often following a drop or water damage. Connection Interference USB/Cable Issues : The device is unable to
If you’re seeing on your iPhone—most commonly during iCloud backups, software updates, or restoring from a backup—it typically points to a network communication failure between your device and Apple’s servers. Unlike a simple “page not found” web error, 4045 on iOS suggests the connection was interrupted, data was corrupted mid-transfer, or security settings blocked the handshake.
: Temporarily turn off your computer's firewall, antivirus, or VPN before attempting the restore again. Swap Hardware and Cables
A force restart clears volatile memory that might be conflicting with the update.