OK modded a UK v4, just one thing stupid. BIOS wires MNOP were soldered on QRTUVW side instead and vice versa. (I've been chipping v7 mostly and it slipped by me by force of habit). Anyway I've set it properly now, but only PS1 CDR's work. PS2 DVDR reports Disc Read Error and CDRs just give me a blue disc on the browser menu and refuse to go any further. Originals are no different either, I've even played around with the laser. Anyone know the answer?