That was my first thought and I hope he already tried that...
It might help, if he connects his laser, or another idea...
If you start your emus through ule, try to start it from USB and set IOP-Reset to 'off'.
That might cause the emulators to use ule's USB-Drivers and MAYBE they are compatible to those emulators...
PS2 V7/DMS3 V2 (FW:2.4b7); Seagate Baracuda 200GB
PS2 V7/CC1.0 (FW:34 hacked v2 BM:2.1.6); Maxtor DiamondMAX9 PLUS 160GB
PS2 SCPH-30004R; NoMod+NoLaser
3xSony MC 8MB
MAX/Datel 16MB with Boot-CD
Custom FMCB 1.8b+ Beta-Build, my AIO 0.5, Sony&xRhino-Linux