Failed -remote 39-flashing Lock Flag Is Locked. Please Unlock It First 39--
To understand why this error occurs, one must understand the architecture of modern embedded flash memory (eMMC or UFS).
The Flash Memory Controller: Inside your device's storage chip, there is a dedicated controller. This controller manages how data is written, read, and erased. It does not simply accept commands blindly; it checks a specific configuration file or register known as the Flash Configuration (FC) or Device Configuration (DC).
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. To understand why this error occurs, one must
The error remote 39 indicates that your tool tried to force the door open without turning the key first. The controller responded with a NACK (Negative Acknowledgment) and the status code 39, signifying a permissions violation.
Would you like this converted into a formatted PDF or tailored to a specific device/model or flashing tool? The error remote 39 indicates that your tool
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
Lock and unlock the bootloader | Android Open Source Project If your device appears
Dismiss Got it. On this page. Get into the bootloader. Unlock the bootloader. Lock the bootloader. Set lock and unlock properties. Android Open Source Project Flash with Fastboot - Android Open Source Project
failed -remote 39-flashing lock flag is locked. please unlock it first
Connect your device in bootloader/fastboot mode and run:
fastboot devices
If your device appears, proceed. If not, troubleshoot drivers.
