These are various ways the system says, “ “
Even if you have already enabled "OEM Unlocking" in your phone's developer settings, you must still run a specific command while the device is in Fastboot mode to complete the process:
Samsung utilizes "Download Mode" instead of Fastboot and uses an "OEM Lock" flag tracked by Knox security. flashing lock flag is locked please unlock it first full
Unlocking the bootloader will wipe all data on your phone. Back up first if possible.
When you encounter this error, it means the software tool you are using cannot write new data to the device storage partitions because a security flag is still set to "locked." Understanding the Root Causes These are various ways the system says, “
Follow this progression to clear the flag and authorize system flashing. Step 1: Back Up Your Device
Locate and toggle it to Enabled . Enter your PIN or password if prompted. Scroll down to find USB Debugging and toggle it to Enabled . When you encounter this error, it means the
[Settings] -> [About Phone] -> [Tap Build Number 7x] │ ▼ [Developer Options] -> [Enable OEM Unlocking & USB Debugging] Step 3: Configure Your Computer
If the OEM Unlocking toggle is greyed out in your settings, your device might have an unyielding carrier lock (common on US carriers like Verizon or AT&T). You must request a carrier unlock before you can toggle this switch.
Right-click the program/file and select .