: This is a highly experimental process. It requires an internal flash tool called HDK, which is not publicly available. The method is extremely risky and has a high chance of bricking your device. Proceed with extreme caution.
The unlocking process automatically triggers a factory reset. Back up everything. nokia 3.4 unlock bootloader
Flash a custom recovery like (if available for the 3.4). Root the device using Magisk by patching the boot image. Install Custom ROMs. : This is a highly experimental process
Unlocking the bootloader is the essential first step for advanced modifications such as rooting with Magisk , installing custom ROMs, or using custom recoveries like TWRP. Prerequisites for Unlocking installing custom ROMs