Stupid sbox/neokey

[supercool9]

I got an sbox/neokey for my ps2 so I can use some of my old ps1 backups until I get some cash to have someone mod my ps2 with my messiah 2 I bought. Well, the thing is giving me problems because its not doing its job It wont boot my ps1 games, even tho they should be working just fine. I have a V7 ps2, and the little sbox has no version number, but I thought it worked on all ps2's. Anyone got any idea's why it isnt working?