While various "secret codes" exist for diagnostic purposes, they do not offer IMEI modification:
For legitimate troubleshooting, most Nokia 1100 models respond to these standard codes: : Displays your current IMEI number. *#0000# : Displays the software/firmware version. nokia 1100 imei change code
It was the forbidden button. In the industry, it was known as the "Rebirth Code." It was a simple algorithm, really. You entered the fifteen digits of your choice, clicked 'Write,' and the hardware obeyed. It overwrote the chip where the identity lived. While various "secret codes" exist for diagnostic purposes,