Hi everyone! I recently purchased an japanese super slim PS3 with... Model No. CECH 4000B Original Firmware: 4.31 ... i know, it's impossible for me to downgrade to any CFW, no matter if i use an USB-Dongle or things like the E3 Flasher. Correct? But what about Optical Drive Emulators like 3Key or Cobra ODW? Will they work with my console? And if no, is there any other way to run backups of retail disc games on this console? I really would appreciate any king of advice .