Problem Booting PS1 with DMS3

[killa5]

I just recently bought a pre-modded PS2 V7 with a DMS3 v2.0 chip. Now, for some reason whenever I try to boot PS1 backups, the system just goes straight to the browser and recognizes the disc as a PS2 disc. It seems to me like the system isn't booting into the different modes available. I can't go into Dev. mode, PS2 mode, PSX mode, or DVD mode. However, it does play all PS2 backups perfectly by just letting it run through (meaning without pressing a button for the appropriate mode). Also, I have been able to install programs on the card without a problem as well as the Dev. browser so the chip seems to be working. Does anyone know anything I can do to get these different modes to boot? Do any of you think it might be the installation even though it does put things on the memory card (even though it doesn't boot them from the memory card). Any tips, help, suggestions or whatever else would be appreciated greatly. Thank you.