You have a NOR PS3 so you can use E3 Flasher (solderless) or Progskeet if you don't mind soldering.
I would worry about the files once you decide which hardware flasher you're going to get.
Check here for most games playable on 3.55 with or without a Dongle:
http://www.pshomebrew.net/wiki/PS3_B...atibility_List