Modifying or repairing a device's IMEI (International Mobile Equipment Identity) is illegal in most countries unless you are the original manufacturer or a licensed service provider repairing a device with a valid, previously assigned IMEI that was corrupted due to a software fault (e.g., after a failed firmware update). Cloning, changing, or using another device’s IMEI is a criminal offense (e.g., violating the FCC guidelines in the US, or similar laws in the EU/Asia). This draft is for educational and legitimate repair purposes only (restoring the original IMEI printed on the device's label).