Click "Start" or "Write" to overwrite the old IMEI.
If you forget your security code, HMD Global (Nokia's manufacturer) cannot open or bypass it. No secret master code exists to retrieve a forgotten lock code. Your only recourse would be to flash new firmware, which would erase all data and restore the code to the factory default. nokia 105 ta 1203 imei change code
The Nokia 105 TA-1203 comes with a default security code of . This code protects access to restricted phone functions and settings. Here is how to change it through the menu system: Click "Start" or "Write" to overwrite the old IMEI
The TekBuster toolkit, an experimental browser-based tool for MediaTek devices, explicitly notes: "Nokia does not allow to change IMEI" due to proprietary NVRAM protection on Series 30+ platform phones. Other functions may work fine, but IMEI modification is deliberately blocked. Your only recourse would be to flash new