How to unlock the Samsung Galaxy A42 5G bootloader

Through this tutorial you will learn how to unlock the bootloader on your Samsung Galaxy A42 5G. The bootloader is the piece of code that runs before the operating system. Tell the phone how to boot and how to find the system kernel. The bootloader image is always device specific because each phone has different specifications and processors.

What is the bootloader?

As with any other Android phone, the Galaxy A42 has its own bootloader. However, there is a problem. Samsung has locked the Galaxy A42 bootloader for security reasons.

If you are an average consumer, you don’t care that your phone has a locked bootloader. But if you’re a power user who likes to tinker with your phone, a locked bootloader is a big deal.

ROMs, mods, and custom files are an important part of the Android experience. However, with a locked bootloader, it is not possible to flash custom ROMs, kernels or root the phone.

Before you can perform any of these operations, you need to unlock the Samsung Galaxy A42 5G bootloader. Fortunately, Samsung has made it very easy for users to unlock the Samsung Galaxy A42 5G bootloader, at least on the Exynos variants.

You can easily unlock the bootloader on the Samsung Galaxy A42. You don’t need any special tools. The unlock function is built into the phone.

How to unlock the Samsung Galaxy A42 5G bootloader

1. Unlock your phone and open the menu Settings.
2. Scroll down and tap Information on the phone -> Software information.
3. Find the build number. Quick tap seven times. This will enable the Developer options.
4. Back to the menu Settings, scroll down and tap Developer options.
5. There is a switch called OEM unlocking: it allows to to unlock the bootloader. Tap the switch.
6. Now press and hold the power button. Touch Switch off to turn off the phone.
7. Second press i buttons volume up e volume down while connecting your phone to a computer via a USB cable. The phone will boot into download mode.
8. The phone will show a screen of notice. Press and hold the volume up button once more.
9. The phone will show a Unblocking the Bootloader?. Press and hold the volume up button.

This will unlock the bootloader of your Samsung Galaxy A42. Once the bootloader is unlocked, all data on the phone will be deleted. The phone will return to factory settings.

Congratulations! Now you can install custom recovery, ROM or Magisk for root access.