There is a newer official firmware version available
here (adding gapless SACD playback and fixing SACD track number display) as well as a slightly newer still beta firmware
here (fixing SACD on-screen track number display, adding the alternate remote code that I described
in this thread , and adding a noise reduction feature that they suggest may be useful for older TV shows or home videos shot with a CCD camera).
To make the player region free, make sure playback is stopped completely (so you just see the blue OPPO screen) and follow these instructions taken from the 970HD brain dump thread at AVS:
MAKE REGION FREE:- Press Setup on remote control to access the setup page
- Enter 9210 on the remote
- A secret menu will pop up
- Select 0 to 6 in region code (0 is region free)
- Press Setup on remote again to exit
It
has been used with PAL discs a fair bit (I have a Ukranian co-worker who owns one and has used it with a number of PAL discs). OPPO generally recommends the 981HD (or the discontinued 971H) as a better PAL player, but the 970HD reportedly does a solid job with PAL playback - my co-worker was pleased with it on his 42" plasma.
You might also be interested in
this AVS thread regarding the 970HD's firmware and component video outputs...