Unlock Bootloader Nokia — 3.4

adb reboot bootloader The phone screen goes black, then shows the screen — a tiny white text on a black background.

fastboot devices Again, your device serial appears. Good. Most Nokia phones would stop here, showing fastboot oem unlock as “not allowed”. But your Nokia 3.4 has a secret: an engineering bootloader exploit. Unlock Bootloader Nokia 3.4

fastboot oem device-info Output should show: (bootloader) Device unlocked: true adb reboot bootloader The phone screen goes black,

To verify: Reboot to bootloader again and type: Most Nokia phones would stop here, showing fastboot

Run it (right-click → Run as administrator).

Use volume keys to highlight “UNLOCK THE BOOTLOADER” and press power button to confirm.

Disclaimer: This process will wipe all data, void the warranty, and may brick the device if done incorrectly. Proceed at your own risk. Your Nokia 3.4 has served you well—stock Android, clean interface, monthly security patches. But lately, you’ve felt the itch for more: custom ROMs, root access, kernel tweaks, or just removing bloatware that even Nokia couldn’t hide.