Firmware 3.55 is a historical "golden" version for PS3 modding, but most games released after 2011 require version 4.21 or higher. When you attempt to play Dead Space 3 on a 3.55 system without a "fix" file, the console cannot decrypt the game's executable (EBOOT.BIN), resulting in a failure to boot. Step-by-Step Fix for Dead Space 3 on CFW 3.55
Enable and ensure "Internal" or "External" is checked depending on where your game is stored. Fix dead space 3 3.55
: While 3.55 was once the standard, modern CFWs (like Evilnat 4.91) allow you to play all games without needing individual EBOOT fixes. You can use a Roger Downgrader to clean your system before moving to a modern 4.XX firmware. Firmware 3
Copy the .pkg files to the root of a FAT32-formatted USB drive. Insert the USB into the right-most port of your PS3. : While 3