Apple’s iPhone bootloader—the fundamental code that kicks off every time you power on your device—has quietly adopted a new identity in the iOS 18.4 beta. What was universally known as iBoot for well over a decade now appears as mBoot in certain internal references, according to developer findings. This seemingly minor nomenclature shift raises intriguing questions about Apple’s evolving firmware architecture, potential hardware transitions, and what this means for developers and security researchers who’ve spent years reverse-engineering iBoot’s inner workings. Let’s break down what we know, why this matters, and where Apple might be heading with this cryptic rebrand.
What exactly is iBoot, and why does it matter?
At its core, iBoot functions as Apple’s stage 2…