DVD Universal Code?

I've a few DVD movie discs with different regional codes and use PowerDVD to watch them. However, it only allows me to change regional code four times, then no more able to watch those discs.

I use Region DVD CSS software to disable it, however, when I play the DVD movie, PowerDVD halts and stops to play without any error message.

Anyone knows other ways enable me to play DVD discs in universal code??? Your help pls.

最簡單可以用DVD Regional Free呢類software轉全區碼
如果想無手尾，直頭轉個RPC1既Firmware