Sorry, now I confused myself and all others as well ;O). I actually have two macs at home, and both seem region locked. So, the precise list of drives/firmwares is here:
Mac Mini: Pioneer DVD-RW DVR-K06, firmware rv. Q614
Macbook Pro: HL-DT-ST DVDRW GSA-S10N, firmware rv. AP09
I appreciate any help, as all links lead somewhere to rpc1 site which is not working.
Thanks in advance,