Sony Xperia 1 III Bootloader Unlock & "Command Not Supported In Default Implementation" Error Fix 

Sony Xperia 1 III Bootloader Unlock & "Command Not Supported In Default Implementation" Error Fix
Sup, Im Transtormers, and today we unlock the bootloader of a Sony Xperia 1 III, and overcome the "FAILED (remote: 'Command not supported in default implementation')
fastboot: error: Command failed" Issue on windows.
Links:
Sony Bootloader Unlock AOSP Project: developer.sony...
Android SDK and Platform Tools: developer.andr...
Sony Xperia Developer(ADB / Fastboot) Drivers: developer.sony...
Lineageos: wiki.lineageos...