Tap 7 times until you see "You are now a developer!" Go back to Settings > System > Developer options . Enable OEM unlocking (toggle it on). Enable USB debugging (toggle it on). The Catch: Official vs. Unofficial Methods
The Nokia 3.4, a budget-friendly smartphone known for its clean Android One experience, holds a secret for tinkerers and custom ROM enthusiasts: an unlockable bootloader. However, unlike many other Android devices, the process for the Nokia 3.4 (codenamed “Doctor Strange”) is not straightforward. It requires navigating HMD Global’s official—but somewhat hidden—unlock program.
HMD Global's official policy states that unlocking the bootloader voids the manufacturer warranty. nokia 3.4 unlock bootloader
Once the phone enters the fastboot screen, retrieve your device data by entering: fastboot oem get_uid Use code with caution.
You may lose access to DRM-protected content (like high-def Netflix) or security-sensitive apps like banking tools. Preparation: You must enable Developer Options and toggle OEM Unlocking before the device can be modified in fastboot mode. Hikari Calyx Tech How to Enter Fastboot Mode To prepare your device for an unlock service or tool: Tap 7 times until you see "You are now a developer
:Some advanced users utilize the TFM Tool Pro or specialized Bootloader Unlock Tools that use an OTP (One-Time Password) system to bypass restrictions, though these often have daily device limits. General Preparation Steps
Use a tool like or QPST to flash a modified firehose programmer that bypasses signature checks. The Catch: Official vs
Unlocking the bootloader of your Nokia 3.4 is the crucial first step toward gaining full control over your device's software. By unlocking it, you open the door to flashing custom ROMs, installing custom recoveries like TWRP, and rooting your device via Magisk.
Unlocking disables verified boot, making your phone more vulnerable to malware if compromised.
In the Command Prompt window, type:
This method uses prototype ABL binaries that contain bootloader unlock capabilities. A developer known as Hikari Calyx has provided these files.