Using third-party service utilities carries inherent risks that you should keep in mind:
The Nokia SPD Unlocker Tool v10 exploits a vulnerability in the Spreadtrum download agent. When a Nokia SPD phone is turned off and connected to a PC via USB, it enters . The tool sends a modified FDL1 and FDL2 file that tricks the phone into reading a patched nvitem partition, effectively telling the modem that any inserted SIM card is accepted. nokia spd unlocker tool v10 link
Never use this tool to modify IMEI numbers. The v10 tool does not have an IMEI changer, but if you find a modded version with one, delete it immediately – IMEI modification is a felony in 40+ countries. nokia spd unlocker tool v10 link
Using these tools comes with significant risks: nokia spd unlocker tool v10 link