A: No. The PS3’s hypervisor will instantly reject any unsigned or incorrectly signed executable. You need CFW/HEN to use modified EBOOTs, and OFW to use originals from discs you own.
Use a tool like multiMAN or Irisman to copy the game disc to your internal HDD. The original EBOOT will be located at: /dev_hdd0/GAMES/[GAME_ID]/PS3_GAME/USRDIR/EBOOT.BIN . 2. Re-downloading Game Updates original ebootbin files for ps3 games free