Newer USB 3.0/3.1 ports (blue or red) sometimes cause timing issues with Fastboot. Try a USB 2.0 port if available.
To "unlock it first," you must go through the manufacturer’s official process. For Xiaomi users, this involves the .
Open a command prompt on your PC and type: fastboot getvar unlocked If it says unlocked: no , your unlock was unsuccessful. flashing lock flag is locked please unlock it first full
Connect your phone in Fastboot mode (Volume Down + Power) to your PC and run the Mi Unlock Tool. Step 3: Troubleshooting Persistent Errors
Understanding the "Flashing Lock Flag is Locked" Error: A Complete Guide Newer USB 3
Xiaomi usually requires a waiting period of 168 hours (7 days) before they allow the unlock.
Go to Settings > About Phone > Tap MIUI Version 7 times. For Xiaomi users, this involves the
Use the USB cable that came with your phone.
Ensure you have the latest ADB and Fastboot drivers installed on your PC. Step 2: The Official Unlock Method