Determining Firmware Version That First Included Cinavia

[doctorm]

I have some old Blu-ray players that are less important. The best is a Sony BDP-S790. Since it's difficult to deal with Cinavia on 3D discs, I'd like to downgrade the firmware on this.

If I'm correct I can get the software and method to downgrade here: http://www.malcolmstagg.com/bdp-s390-downgrade.html
The firmware is of Softpedia.

The thing is, I don't know what firmware version is the last version without that if any.
It does say that 'SACD-R is still broken in 0369'... is that the same issue?

Anyone have this information?

[cholla]

I checked the Sony BDP-S790 with Google.
It was manufactured in 2012. That is the final year settop units were not required to detect Cinavia.
I suspect by late 2012 some units did detect Cinavia.
I do not have a Sony unit so I can't tell you what the oldest firmware it can use is.

SACDs are copy protected but use a much different method than Cinavia.
Your Sony is supposed to play SACDs so you should not have any copyright problems playing.
Copying is a whole different can of worms.