The Nokia 3.4 launched with Android 10 and received its final official updates around Android 12. As official manufacturer support ends, the device becomes vulnerable to security flaws, and newer apps will eventually drop support for older Android versions.

regarding the installation of custom recovery environments.

Go to and enable OEM Unlocking and USB Debugging . Step 2: Acquire the Unlock File

The bootloader rejects any software that is not official factory firmware.

While unlocking the bootloader offers significant benefits, it is not without risks. You must weigh these factors before proceeding:

Assuming you have obtained the unlock code (a string of characters).

The bootloader allows custom code, alternative operating systems, and modified kernels to boot up.