Page 1 of AIWA XD-DV170 hack did not work for my R2-Japan player. please advise.

Hi, the aiwa xd-dv170 hack posted on this site did not work for my player purchased in japan. i was able to execute the osd,top menu,menu,factory sequence, but when i tried a region3(liar liar) dvd, code error still displays.
can somebody help me?

I`ve done the button hack (top menu, menu, osd, factory) on my Aiwa and it says `Factory` on the front panel display, but my region 1 discs still do not work.

The R1 discs I`m trying are The Simpsons box set, and the Aiwa player is region 2.

Has anyone else sucessfully used the R2 version of this player with R1 discs using this hack?

Is Simpsons RCE encoded?

Appreciate any help, thanks.