: Flashing will completely wipe all personal information from the device's memory.
: Once the process finishes (a green checkmark usually appears), disconnect the phone and power it on. The device will reboot automatically. Alternative: Quick Software Fixes If you want to avoid flashing, try these soft fixes first: Nokia 105 User Guide: Restore factory settings - HMD nokia ta1423 flash file download fix
References
If you have the correct .pac firmware file, follow these steps: : Flashing will completely wipe all personal information