few comments regarding tool. as far as I remember PX-116A1 identified as PX-116A so this is value inside proggy but I can fix it if I'm wrong. is PX-116A3 rebadged Pioneer too? I can add if so.
but unfortunately this tool didn't solved my main problem : half of CDR disks being read at half speed on my PX-116A2 please tell me if anyone know solution. also, is it possible to reflash PX-116A2 into Pioneer 121? I will go for it if this solve my problem with CDR reading..