When U make a MMS u have to options either got to 5.00 Cfw or Ofw it gives u u click OFW it gives u 5.00 ofw an u jus update wit sonys network update to 6.20 u ur on fw to play ftb3 then if u wanna go back to cfw do the same thing go back to the option it tells u what fw u want u click cfw an It will giv u 5.00 m33-4