Think of it as a series of locked doors. The first door (BootROM) is physically unchangeable. It checks the key (signature) on the second door (Preloader). If the key fits, the second door opens, which then checks the key on the third door (U-Boot/LK), and so on until the operating system loads. If any key fails, the boot process halts immediately.
MTK Secure Boot is a specific implementation of the Secure Boot protocol on devices powered by MediaTek (MTK) chipsets. MediaTek is a popular chipset manufacturer, and their chipsets are used in a wide range of mobile devices. MTK Secure Boot is designed to provide an additional layer of security to these devices, protecting them from malicious attacks and ensuring the integrity of the boot process. mtk secure boot
You want MTK Secure Boot . It prevents:
Unlocking the bootloader (which requires wiping user data) is often the first step in physical extraction. However, newer MTK chips (Helio G99, Dimensity 7000 series) have hardened secure boot, making forensic access extremely difficult without vendor keys. Think of it as a series of locked doors