| Component | Role | |-----------|------| | | Protocol to flash partitions over USB | | Secure Boot | Only signed images can flash/boot | | Lock state | If locked, no flashing allowed (even signed) | | Unlocking | Requires user confirmation + data wipe | | Root of trust | Factory public key in eFUSE/ROM |
Technicians, hackers, and even curious owners wanted to rearrange the furniture. They wanted to install custom software, repair broken systems, or recover deleted data. To allow this, the factory had left a secret backdoor: . fastboot secure boot
Fastboot Secure Boot had won this battle. Today, every Android device sold globally uses Fastboot Secure Boot (often merged into the broader Android Verified Boot ). It protects billions of devices from low-level malware. | Component | Role | |-----------|------| | |