Question About Lite-On VS Buffalo Firmware

i recently got the Lite-on 20A3S
serching for reviews i found the same drive rebadeged from buffalo

in the next pagehttp://homepage2.nifty.com/yss/dh20a3s/dh20a3s_top.htm
the drive is capable of running jitter test wich i tried on mine and never could

so is it possible that tis PLDS Firmware is the reason
and if so is it possible to crossflash the drive to PLDS firmware
plz post link for firmware if possible