Paste the new Serial Number (often provided by your bypass service provider) into the SN field. Click or Change SN .

Use the "Boot Purple" or "Enter Diag" function within the Kratius or UnlockTool software. This allows the computer to communicate with the phone's NAND memory. Read/Write SN: Click Read Config to see the current serial number.

Kratius SNChanger or similar tools like UnlockTool or HFZ SN Writer.

Standard Lightning to USB cable (no DCSD cable required for these specific A10-A11 models).

Once the software confirms the change, click Reboot or Exit Diag to return the phone to its normal state. 3. Download and Safety

Tools used for bypassing security features are often flagged as "Riskware" or "Malware" by antivirus software. Always download from reputable sources and use a dedicated "work" computer or virtual machine if possible to protect your personal data. Common Troubleshooting

You can often find download links for these tools on technical forums or via video guides from UnlockTool or developers on YouTube.