Failed -remote 39-flashing Lock Flag Is Locked. Please Unlock It First 39-- ❲2024❳
Use this variant if you are targeting core hardware files like the bootloader layout or partition tables. Step 4: Confirm Unlocking on the Phone Hardware
For Unisoc (SPD) devices, simply unlocking the bootloader is not always enough. The device checks an AVB (Android Verified Boot) vbmeta partition for a flag. A proven fix used by developers is to:
If none of the above steps work, you have likely encountered a device-specific, OEM-specific lock that requires unique knowledge. Use this variant if you are targeting core
The numbers flanking the error message are OEM-specific error codes (most commonly seen on devices utilizing MediaTek, Spreadtrum/Unisoc, or specific Xiaomi/POCO/Realme architectures). They point directly to a hardware-level restriction preventing partition modification. Root Causes of the Error
The device requires a specific security procedure to clear this flag before accepting new software. Causes of the Lock Flag A proven fix used by developers is to:
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.
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. Root Causes of the Error The device requires
In many cases, yes. Unlocking the bootloader is often considered a modification that voids the manufacturer's warranty. However, on devices like Google Pixels, the warranty isn't automatically voided, but the manufacturer may refuse support for software-related issues. It's always best to check your device's specific warranty terms before proceeding [8†L14-L15].
The operation failed because the system (likely an ECU, bootloader, or microcontroller) has a enabled. This is a security feature designed to prevent unauthorized writing or flashing of firmware.