Skip to Content

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

This error occurs when you try to use to flash files onto an Android device (often Motorola or Lenovo) while the bootloader is still protected by a software lock. Essentially, the device's security prevents any unauthorized changes to its system partitions. Android Open Source Project 🛠️ How to Fix the Error To resolve this, you must follow these steps in order: 1. Enable "OEM Unlocking" in Android About Phone Build Number seven times to enable Developer Options Developer Options OEM Unlocking USB Debugging 2. Execute the Unlock Command Connect your phone to your computer via USB. Use the command adb reboot bootloader to enter Fastboot mode. Run one of these commands based on your device age: Newer devices: fastboot flashing unlock Older devices: fastboot oem unlock Android Open Source Project 3. Specific Case: Motorola/Lenovo Many Motorola devices require a unique Unlock Key Motorola Unlock Portal You will need to run fastboot oem get_unlock_data to get a string of characters to submit to their site. ⚠️ Important Warnings Data Loss: Unlocking the bootloader wipes all user data (factory reset). This process typically voids your warranty Your device becomes less secure against physical tampering. Android Open Source Project 💡 Troubleshooting Tips

The error:
create paper: failed -remote 39-flashing lock flag is locked. please unlock it first This error occurs when you try to use

Note: On some devices like Xiaomi, you must also bind your account under "Mi Unlock Status" and wait for a specified period (e.g., 168–720 hours). 2. Enter Fastboot Mode Visit the manufacturer's official website (e

Method A – Using SP Flash Tool (for full firmware flash) Note: On some devices like Xiaomi, you must

fastboot oem unlock-go
fastboot flashing unlock_critical

Q2: Can I lock the flag again after flashing?

A: Yes, but be absolutely sure you are running 100% stock, signed images. Locking with custom images can brick the device.

  • If permanent:

    The "Lock Flag": Think of the flash memory as a high-security vault. The "Flashing Lock Flag" is the digital equivalent of the bolt on the vault door.