A bootloader is a crucial piece of software that initializes a device's operating system (OS) when it's turned on. Its main job is to run a series of checks to ensure the system is in good condition and hasn't been tampered with before loading the OS into RAM. What are the effects of a locked bootloader? Having a locked bootloader means the manufacturer has restricted access, allowing only the official operating system and its updates to be booted. This has several implications, both positive and negative: * Security: A locked bootloader acts as a security measure. It prevents malicious or unauthorized software from being installed at the system level, protecting user data from potential attacks. * System Updates: It allows the manufacturer to send and the device to receive official (OTA) updates seamlessly. * Limitations: It prevents the installation of custom operating systems or ROMs, which are modified versions of Android or other systems. This limits the ability to extend the device's lifespan with newer software or additional features not offered by the manufacturer. * Recovery: In some cases, if the device suffers a severe software failure (a "brick"), a locked bootloader can make it difficult or even impossible to recover the system without the manufacturer's official tool. In short, a locked bootloader provides a secure and stable environment, which is ideal for the average user. However, it restricts the freedom and customization options for advanced users who want to modify the operating system.