Sony195 to Liteon 48125W not write P-CAV?

SonyCRX-195 ,OC Liteon 48125W not write in P-CAV ?

SonyCRX-195 not 48125W, thus, no P-CAV. Besides, 48125W writes in CAV.

Using old firmware VS06 I Burn some discs in P-Cav in lower of 40x speed ,but now with the firmware Vs08 not possible at all ?