Unlock Bootloader Nokia 3.4 May 2026

Navigate to the extracted unlock tool folder. Inside, you’ll find a script named unlock_nokia.bat (or similar).

Now reboot to bootloader:

But one day, a critical security patch arrives. You can’t install it normally. You have to re-lock the bootloader — which requires flashing stock firmware first. That’s another story.

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

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