A: This means your device’s bootloader is locked for security reasons. Flashing (installing firmware) is not allowed while the bootloader is locked. To proceed:
A file is open in another application or being used by a process, causing a lock flag to be activated to prevent data corruption. flashing lock flag is locked please unlock it first full
Locate the entry and tap it rapidly seven (7) times . A toast notification will say: "You are now a developer!" . A: This means your device’s bootloader is locked