If you replace the logic board with a new one from Apple, it will initially have no serial number. An AASP uses proprietary software to "tattoo" the original serial number from the chassis onto the new board. Specialized Hardware Tools:
When Apple ships a new, blank logic board (a "service part") to an Authorized Service Provider (AASP), the board has no serial number or a generic one. The technician uses a second Mac running connected via USB-C to the M1 Mac in DFU mode. The software contacts Apple’s servers, cryptographically pairs the new logic board to the original enclosure’s serial number, and burns the serial into the Secure Enclave. macbook m1 change serial number
On Intel Macs, you could boot into single-user mode (Cmd+S) or use nvram commands. On M1, single-user mode is disabled by default. You must boot into (hold power button) and then run Startup Security Utility to reduce security. Even then, the nvram command is heavily restricted. If you replace the logic board with a
Some tools exist but are:
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If you replace the logic board with a new one from Apple, it will initially have no serial number. An AASP uses proprietary software to "tattoo" the original serial number from the chassis onto the new board. Specialized Hardware Tools:
When Apple ships a new, blank logic board (a "service part") to an Authorized Service Provider (AASP), the board has no serial number or a generic one. The technician uses a second Mac running connected via USB-C to the M1 Mac in DFU mode. The software contacts Apple’s servers, cryptographically pairs the new logic board to the original enclosure’s serial number, and burns the serial into the Secure Enclave.
On Intel Macs, you could boot into single-user mode (Cmd+S) or use nvram commands. On M1, single-user mode is disabled by default. You must boot into (hold power button) and then run Startup Security Utility to reduce security. Even then, the nvram command is heavily restricted.