Bring up ulaunch elf on scph 90004 pal

I have got a modded scph 90004 ps2 pal system. Said that its already modded, i wanted to see the type of chip that was fitted. I came to know that it is super 7 chip( a clone for sure ). I am now trying to boot up a elf file as soon as the ps2 starts..the elf file wOuld be opl0.7.......

i WANT TO ACCESS the boot menu for the super 7 chip...tried tringle+o combination during start of ps2 which did not work..also tried R1 but did not work....any method ??

Please note : i have another 70006 modded (ntsc) ps2 with fmcb(multiversion install) installed and apps like opl...

SUPER 7 Main Page

try with the uLE disk image.
that link shows how to start a disk. once you boot into uLE then you can start any homebrew or OPL etc......