Failed -remote 39-flashing Lock Flag Is Locked. Please Unlock It First 39-- !!install!! May 2026

Modern Android security prevents unauthorized software changes unless the "lock flag" is explicitly flipped by the user. Here is how to fix this and successfully unlock your device. 1. Enable OEM Unlocking

You cannot unlock the bootloader through a computer alone; you must first give the phone permission from within the Android OS. Open > About Phone .

Try the modern standard command first: fastboot flashing unlock