: Use the Reddit guide to find it via Device Manager on Windows by looking at the "Instance ID" properties.
Open (Mac running macOS Catalina or later) or iTunes (Windows or older macOS versions). Select your iPhone icon to view the device summary page.
Right-click (or secondary-click) on the ECID number and select . Method 2: Using Apple Configurator (Mac Only) register ecid iphone new
Select your correct Apple hardware platform (iOS) and enter a recognizable device name.
Before you can register your ECID, you must retrieve it from your device. You can find this number using a computer running either macOS or Windows. Method 1: Using Apple Finder or iTunes Connect your iPhone to your computer using a USB cable. : Use the Reddit guide to find it
If you are trying to install a beta OS or test an app, you likely actually need your , not the ECID. Developers use the UDID to register a device in the Apple Developer Program.
If you are registering an ECID on an automated diagnostic or custom server tool (such as iBoy Ramdisk, Broque, or third-party web portals): Right-click (or secondary-click) on the ECID number and
You can add a single device by providing the name and identifier.
Registering an ECID is typically a "gateway" process required by various third-party tools. Here is a breakdown of the experience based on common use cases: Ease of Access
The script also saves the APNonce (Anti-Replay Nonce), which is critical for newer iPhones (A12+ chips).
