Flashing Lock Flag Is Locked Please Unlock It First Full !exclusive!

Common in Xiaomi or OnePlus devices when trying to flash a new ROM. The Cause: Bootloader is locked to protect the OS integrity. OEM Unlocking in Developer Options.

Every Android smartphone and tablet ships with a security protocol called a . The bootloader is the first piece of code that executes when you power on your device, ensuring that the operating system loading into memory is verified and digitally signed by the original equipment manufacturer (OEM).

Warning: Direct database edits can corrupt your system. Use only under SAP support direction. flashing lock flag is locked please unlock it first full

This message often appears when:

Android devices ship with a locked bootloader to protect user data and prevent malicious software from changing the operating system. When you use commands like fastboot flash or fastboot flashing unlock critical , the system queries an internal security variable. If this variable returns a zero value, the partition engine throws a hard stop error to safeguard the phone. This roadblock occurs under two primary circumstances: Common in Xiaomi or OnePlus devices when trying

Software utilities like Fastboot, Mi Flash Tool, SP Flash Tool, or Odin check specific parameters (flags) on the device before executing commands. If the tool detects that the "lock flag" is active, it halts the process and outputs the "please unlock it first" warning.

In your G-code sender (UGS, LightBurn, Candle), type the following command exactly: Every Android smartphone and tablet ships with a

28 Apr 2026 — 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 Fix Flashing Unlock is Not Allowed

If the hardware is unlocked but the software still sees a "flag," try clearing the attributes manually. For Windows (Diskpart): Command Prompt and hit Enter. select disk X (replace X with your drive number). attributes disk clear readonly Restart your machine. For Linux Users: command to check the frozen status: sudo hdparm -I /dev/sdX

You must instruct the phone's operating system to permit bootloader modifications. Without this, fastboot commands are blocked instantly. Open your phone's menu. Navigate to About Phone (or System > About Phone ).

If you are seeing the message on your screen, you are likely trying to modify the software on your smartphone—specifically a Xiaomi, Redmi, or POCO device. This error typically appears in tools like MiFlash or during a Fastboot operation. What Does This Error Mean? In simple terms, your phone’s Bootloader is locked .