Failed -remote 39-flashing Lock Flag Is Locked. Please Unlock It First 39-- [work]

: Go to Settings > About Phone and tap on Build Number seven times until it says "You are now a developer."

: Standard commands often fail; you may need a specialized tool like the TomKing62 CVE Unlocker . : Go to Settings > About Phone and

Lock and unlock the bootloader | Android Open Source Project : Go to Settings > About Phone and