OPL is simply incompatible with your drive (Like mine).
Any advice on what could be causing my yellow screen problems? It seems this is with newer versions of OPL...
Yes, and because 0.7 has far better game compatibility over 0.2.
Is there any benefit to using 0.7 over 0.2, mainly speed/video playback increases?
Not to mention that 0.2 isn't really OPL, but a hacked USBAdvance.
Unmodified SCPH-77006 with SM 3.6
SCPH-39006 with M-chip modchip, SCPH-10281 NA and refurb Seagate 80GB HDD
SCPH-10000 v1.00 with SCPH-10190 PCMCIA NA and SCPH-20400 HDD unit