Failed -remote 39-flashing Lock Flag Is Locked. Please Unlock It First 39--

This specific error message occurs when you try to flash custom firmware, recoveries, or system images onto an Android device via Fastboot while the device's bootloader remains locked. 🛠️ The Root Cause of the Error

You must bind your Xiaomi account in the "Mi Unlock Status" settings and use the official Mi Unlock Tool on a PC. There is often a mandatory waiting period (e.g., 168 hours).

Are you using a device, or a different brand like Google Pixel or Motorola ? Fix Device State Locked Unlockable in Fastboot Mode This specific error message occurs when you try

Lock and unlock the bootloader | Android Open Source Project

Sometimes the simplest things are the culprits. Check the following: Are you using a device, or a different

This is the core of the problem. Modern devices include a —a security mechanism that prevents unauthorized writing to critical partitions (like boot , recovery , system , or vbmeta ). When this flag is locked , the bootloader rejects any fastboot flash commands.

Once the phone is on the bootloader screen (usually showing a robot or text), verify the connection: fastboot devices Step 3: The Unlock Command Modern devices include a —a security mechanism that

If it returns unlocked: yes , you can now proceed with your original flashing project without the "remote flag" error. Troubleshooting Common Issues

Be careful when using scripts that automatically program option bytes.

To resolve this, you must explicitly unlock the bootloader through the following steps: 1. Enable "OEM Unlocking" in Android