I don't know what you mean by "PS1 Game code". Sorry.
Originally Posted by sandala
The Playstation game has to be a legit Playstation game, and must be bootable by the SCPH-10000. In other words, it must be a Sony NTSC-J Playstation game.
The PSU should be PSU-pasted onto a memory card with uLaunchELF (Run using another PS2 or with a memory card reader). I used the PS2 save builder to extract the files from the PSU file and pasted them manually onto my PS2's memory card with uLaunchELF, using my SCPH-39006.
SCPH-10000 S. MINOKAMO v1.01 (Defunct)
SCPH-10000 S. KISARAZU v1.00 (faulty)
SCPH-15000 S. KOHDA (With warranty seal!) :D
DESR-5100 S. EMCS