Downgrade PS3 3.60 to 3.55 help?

[Znote4life]

Hey.. quick question.. i have looked at the posts in the forum, and they all say that it is not possible to downgrade from 3.60.. but the newest post about this topic is from 2011.. is i possible today. i accidentally upgraded to 3.60..

if it is not possible, does multiman and other stuff work on 3.60?

[bigbossxseb]

You will need to an E3 or Progskeet and downgrade it mate.