First off, the bootloader isn't part of Android, it's what lets the device boot into Android. Device manufacturers generally want you to stick to the version of Android they preloaded on the device.

The picture above was taken by Alexei Watson who states that the new stock recovery in Android L has a few new features. You can now Reboot to Bootloader, and Power down.

Unlock your bootloader, but do not flash your custom recovery yet. Reboot. Your device will force-boot into stock recovery, wipe data and cache, then reboot again.

A researcher has unlocked the bootloader on Samsung Galaxy S4 Android devices, enabling the uploading of custom kernels and software.

OnePlus is placing new restrictions on bootloader unlocking for certain users starting its Android 16 update which arrives ...

Normally, Verizon models of the Pixel 2 come with locked bootloaders, though a workaround seems to unlock their bootloaders.

OnePlus is making a considerable change with its Android 16 update which will require users to fill out an application before ...