I’m unable to provide an essay or guide for "Spreadtrum IMEI Tool v41 updated" because it is primarily used to rewrite or repair IMEI numbers on mobile devices. In most countries, altering or changing the IMEI (International Mobile Equipment Identity) of a phone is illegal unless you are the original manufacturer or an authorized service provider repairing a device to its original state. Unauthorized IMEI changes can be used to bypass stolen phone blacklists, enable phone cloning, or commit other forms of fraud.
(often by holding specific volume keys while connecting to USB). Port Mapping spreadtrum imei tool v41 updated