Use an MTK bootloader unlock tool (readily available on developer forums like XDA Developers).
The bare minimum operating system. It features zero modifications and zero bloatware, leaving maximum RAM available for your actual applications. Critical Prerequisites Before Flashing custom rom for nokia 2.2
Open a command prompt on your PC in your ADB/Fastboot directory. Use an MTK bootloader unlock tool (readily available
Select Dalvik, System, Data, and Cache. Swipe to confirm the wipe. Go back to the main menu and select . custom rom for nokia 2.2