Parental Control lock on 16547

Hello all -

Recently obtained a stock phat 360 - all running well until I was greeted with the parental lock screen......... Anyone know how to remove this on dash 16547 ( yes, I am older than 18 before anyone asks lol, allot older actually lol) ?

I have spent ages on google - the previous dash glitch no longer works...... I've tried various codes ( LT,RT, X,Y,LB,RB etc etc) with no joy...... However, I have not seen anyone giving a specific code for 16547....

This is really starting to do my head in now lol

Please can anyone help?

Thanking all in advance!