The error message is a security safety mechanism on Android devices, particularly those with Unisoc or Spreadtrum chipsets, that prevents any modifications to the system partitions while the bootloader is in a "locked" state. What This Error Means
Before starting, ensure you have the following:
In essence, this error means:
If your machine is stuck and displaying this symbol, you must unlock it before you can start a new load or open the door. Here is how to resolve the issue quickly. 🛑 Quick Fix: Deactivate the Child Lock
When a device ships from the manufacturer, the is locked. The bootloader is the low-level software that tells your device's hardware what to do when you turn it on. To protect your data and the integrity of the OS, a locked bootloader prevents any unsigned or modified software from being written to the system partitions, especially the boot and recovery partitions. flashing lock flag is locked please unlock it first full
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 Device State Locked Unlockable in Fastboot Mode
Lock and unlock the bootloader | Android Open Source Project The error message is a security safety mechanism
When you attempt to run commands like fastboot flash... or fastboot boot... while the flag is locked, the device prevents the action to protect the system. Trying to install a custom ROM (e.g., LineageOS). Attempting to gain root access. Flashing a custom recovery (e.g., TWRP). Prerequisites: Before You Start