Tools: computer.
1. Search Xiaomi Resource Download Center with Baidu, and click Xiaomi Mobile Service Support in the search results.
2. After entering the website, click miui at the top of the interface.
3. Click Unlock in the upper right corner of the website.
4. Click Unlock Now at the bottom of the website.
5. Enter Xiaomi account and password in the current page, and finally click Login.
6. After logging in, it will show that you have obtained the unlocking qualification, indicating that the unlocking setting has been activated.