There is no advantage of reverting backwards to old outdate obsolete Firmware.
It might be helpful if you provided details as to exactly what your â€œcause me some problemsâ€ problem is.
In your pervious Forum Posting titled â€œ[B]Pioneer 111D 1.23 making coasters of dl +r discs[/B]â€ your problem was related to the use of poor quality blank media.
In seeing that your previous problem was related to the use of poor quality blank media leads me to suspect your current undisclosed problem is not Firmware related but is related to the use of poor quality blank media problem.
It might be helpful to closely review the below Web Link concerning blank Media. For quality error free results only use media that is listed on the 1st Class Media list ->