Highly dependent on the iOS version and device model. It is often most effective on devices running iOS 14 through iOS 16. User Feedback:
: Link your iPhone or iPad to your computer using a USB cable. Get Your ECID : Open the FRPFile All-in-One (AIO) tool. Locate the register ecid frpfile upd
To summarize:
Follow these instructions carefully to register your device. Highly dependent on the iOS version and device model