Nokia has released over-the-air (OTA) updates that block the methods used by V1.0. If your device runs security patch level March 2022 or later, this tool will likely fail. You may need to downgrade firmware first (supported by the same tool via “Flash Stock ROM” option).
If you have an older Nokia C or G series phone sitting on a desk, locked to a carrier you no longer use, download the Nokia Spd Unlocker Tool V1.0 from a reputable source, follow the steps carefully, and enjoy the freedom of a truly unlocked device. Just remember to back up your NVRAM first—an ounce of prevention saves a bricked phone. Nokia Spd Unlocker Tool V1.0