Ensure your smartphone has at least 60% battery to prevent power failure mid-flash.
If you are staring at this screen right now, do not panic. The "Flag" is just data, and data can be changed if you know the password.
Resolving the issue requires identifying exactly why the bootloader is enforcing this block. There are three main reasons this happens: 1. Missing Settings Permissions
(Most Common Fix)
Ensure your phone has at least 50% battery life to prevent it from turning off mid-process.
This process will wipe all data on your device. Back up your photos, contacts, and files before proceeding.
Verify that the "KG State" or "RMM State" in the top left corner of Download Mode changes from "Checking" or "Locked" to "Prenormal" or disappears entirely before trying to flash via Odin. Troubleshooting Common Failures flashing lock flag is locked please unlock it first full
Extract the ZIP folder directly to an accessible drive root (e.g., C:\platform-tools ). Ensure there are anywhere in the file path directory to prevent script crashes.
Look for "frozen" under the Security section. A sleep/wake cycle usually clears this. ⚠️ Important Safety Note Flashing firmware while a lock flag is active can brick your device
Particularly for 301 (plant-to-plant transfer) or 311 (storage location transfer), the system checks for existing locks on the material. Ensure your smartphone has at least 60% battery
Use the manufacturer's official unlock tool (e.g., Mi Unlock Tool). 💻 Technical Workarounds (Command Line)
After the device reboots, enable USB debugging and OEM unlocking again. Re-enter fastboot mode. Run the command: fastboot flashing unlock_critical Use code with caution.