Took me hours, I didn't realise that even though my bootloader was unlocked it still had to be.. Unlocked..
The only issue I had was 'waiting for device'. Under adb.
Once I unlocked the bootloader it was alright, which btw if you do and it says your imei number is too long, remove the last digit.. Which obviously you know, but others might not.
Knowing what I know now, could get one done in no time.