Requirements: The following tutorial will only work on Spreadtrum devices.
Change or write IMEI using WriteIMEI tool
Step 1. Download and Install Spreadtrum Driver on your Windows Computer.
Step 2. Download and extract WriteIMEI tool on your computer. After extracting you will be able to see the following files.
Step 3. Now, Open WriteIMEI.exe.
Step 4. Once WriteIMEI is launched, you will be able to see the following screen.
Step 5. Now, Click on the Mode Select and select Normal Mode.
Step 6. Now, Click on the Set and Select the list of IMEI you want to Write (for example, if your device have single IMEI then select IMEI1 only, and remove the tick from the IMEI2 and others).
Step 7. Under the IMEI1 option, You will be able to see 2 options i.e Manual Input and Auto Generated IMEI. Select Manual Input (if you want to put the IMEI manually).
Step 8. Now, click on Save to Continue.
Step 9. Now, Under the Please input IMEI1 option write the 15 digit IMEI code (you can know your device IMEI by Dialing *#06# or you will find the IMEI at the back panel of your device).
Step 10. Now, Connect your Spreadtrum device to the computer.
Step 11. Now, Click on Write Button to begin writing IMEI process.
Step 12. Once, IMEI Flash is completed you will be able to see green Pass Message on WriteIMEi Tool.
Step 13. Now, restart your Device.
Step 14. Now, Check your IMEI by Dialing *#06# (this will verify the IMEI write process is code correctly or not).