Many users who start to take an interest in Android customization often confuse two key concepts: rooting and unlocking the bootloader. Although they are related, they are not the same and serve different functions in the process of modifying an Android device.
In this article, we clearly explain what each one means, how they differ, and how they are related.
The bootloader is software that runs before the Android operating system every time you turn on the device. Its function is to verify that the system that is about to start is secure and signed by the manufacturer.
When the bootloader is locked, the system only boots if it detects an official version of the firmware. This prevents users from modifying the operating system or installing custom ROMs.
Unlocking the bootloader is the first step to being able to modify the Android system. It allows you to:
- Install custom recoveries like TWRP.
- Flash unofficial ROMs.
- Root the device.
Important: Unlocking the bootloader resets the device to factory settings and erases all data.
What does it mean to root an Android device?
Rooting involves obtaining superuser (root) privileges within the Android operating system. Once rooted, you can access, modify, or delete system files that would normally be restricted.
Main differences between root and unlocked bootloader
| Feature | Unlocking the bootloader | Rooting the device |
|---|---|---|
| What is it? | Removing the boot lock | Gaining full system access | When is it done? | First step before root | Subsequent step | What does it allow? | Flashing ROMs or recoveries | Modifying the Android system | Does it erase data? | Yes, when unlocking | Not necessarily | Does it void the warranty? | In many cases, yes | It can also void it | Can it be reversed? | Sometimes yes (relock), but leaves a trace | Root can be removed |
Can I root without unlocking the bootloader?
In older versions of Android, it was possible to root without unlocking the bootloader using methods like temporary exploits. However, on modern devices, it is not possible to root without unlocking the bootloader, as security systems are much stricter.
What should I do first?
If you are interested in modifying your device:
- Unlock the bootloader → Gives you the freedom to flash files.
- Install a custom recovery (optional) → Like TWRP, to facilitate flashing ZIP files.
- Root the device → Using tools like Magisk.
Unlocking the bootloader and rooting are distinct but complementary processes. The first gives you access to the boot system, the second grants you superuser permissions. Understanding this difference is key to avoiding mistakes, protecting your device, and achieving advanced customization safely.
