LG Q6 often has fastboot drivers issues. Use the official Google USB driver and try a USB 2.0 port. Or use the QFIL method instead.
The exploit only works on Android 7.1.1 Nougat (specific security patches). If you are on Android 8.1 Oreo, you must downgrade. lg q6 unlock bootloader
However, there is a specific variant that is unlockable: . This guide covers both the general exploit method and the special case. LG Q6 often has fastboot drivers issues
This is normal. It means the bootloader is unlocked. To reduce the display time, flash a custom boot logo or ignore it. you must downgrade. However