Searching “codebreaker version 101 download top” on Google will yield sketchy file-hosting sites. Here’s how to identify a safe, working copy.
Add the .ELF file to your FreeMcBoot menu.
Legacy PlayStation 2 homebrew websites that host verified ELF and ISO files.
What you are using (FreeMCBoot, OPL, or physical discs)? The region of your console (NTSC-U, PAL, or NTSC-J)? If you need help finding specific cheat codes for a game?