Macbook M1 Change Serial Number -

This is the darker reason. A stolen MacBook is locked to the original owner’s Apple ID. The thief hopes that changing the serial number will fool Apple’s servers into thinking it is a new, unlocked device. On Intel Macs, this was a grey-market service. On M1 Macs, this is effectively a dead end.

Yes, many scam websites offer "M1 Pro Serial Changer" for a fee. They are either distributing malware or simply taking your money. Do not download unknown executables—they can bypass macOS Gatekeeper and steal your data. macbook m1 change serial number

The Checkm8 bootrom exploit (iPhone 4 to X) doesn’t apply to M1. Apple’s bootrom on M1 is encrypted and signed with a hardware root key. No public exploit allows unsigned code execution at the bootrom level on M1. This is the darker reason

Legal note: Tampering with hardware identifiers to defraud Apple or consumers can lead to civil and criminal liability. The Checkm8 bootrom exploit (iPhone 4 to X)

This is the most common legitimate scenario. A technician buys a "donor" M1 board from a liquid-damaged or physically broken MacBook. They repair a different MacBook by swapping in that donor board. Now, they have a working MacBook (Motherboard B) with the Serial Number of the donor machine (Motherboard A). The screen, trackpad, and top case have the original serial number (Machine C). The result? Mismatched serials causing iCloud lockouts, activation lock issues, and "Unable to verify display" pop-ups.