Macbook Pro 13 Retina Early 2015 Model

Your computer is disabled, please wait 60 minutes. EFI also locked, I tried using EFI boot mode V2, took over 48 hours to get through the combinations but still nothing. I noticed that sometimes after a combination is entered by the box the macbook doesn’t clear the entered combination in the predefined time of 12 seconds and I sometimes end up with 8 to 12 characters on the screen before it’s cleared. so I tried increase the wait time to 15 seconds per try, still didn’t make a difference. I am unable to tell if the EFI is locked with a 4 or 6 digit pin, I’m also unable to tell what os version is currently installed on the Mac. Is there any beta solution u could try.