Originally Posted by bladecutter_ph
Is there a way to downgrade the BDP s480 firmware from M07.R.0615 to its lower version? The problem is that the latest version includes Cinavia protection technology which stops practically all my blu rays discs which I've normally played before. Tried downgrading via disc by inserting the old firmware but it won't update as the current version is already uploaded. Tried resetting to factory default but latest firmware stays. I've read anotner owner complaining of similar error message. I know downgrade will remove the Cinavia into the system. Can someone help me how to downgrade or fix the cinavia issue? Will appreciate your help.
Originally Posted by andyross63
There is no way to downgrade.
I think it is very possible the tech's at Sony's repair facility are able to; at the very least re-flash firmware (something the end user cannot by simply sticking in a disc, trying to re-run the update process via the internet or from a thumb drive), it will say it's already updated. So if they can re-flash or overwrite the current firmware data stored are they first erasing the old, or simply writing over it? They can do it at the repair facility. So how exactly are they? One possibility is it's as simple as going into the service menu and using the hidden flashing/update option in there. I have some pictures posted on the BDP-S560/s360 & BDP-S370 threads from a few months ago.
Perhaps it's a bit more involved, I wasn't really up for turning around and farking up my re-flashed blu-ray player but it might be worth it to mess around a bit now. Unless someone knows for sure that-that service menu way doesn't work - either with a re-flash or trying to downgrade...
Last year I had to send in an old Sony blu-ray player that was under warranty to get repaired. The last "upgrade" turned my old Sherman tank Sony BDP-S560 that played everything I ever tried BR & DVD into playing way less than 50% of the Blu-rays I tried. After talking with them on the phone (they of course could find no problem with their Sony Test BR's, but I said they had to re-flash the firmware otherwise the thing was not going to be much use to me broken.
Since it was shipped back, it now plays about 90-95% of the BR's I try, the main issue is with new one out of every 10 or so blu-rays that gives me the old familiar invalid disc error. And since that was likely the last firmware ever for that model I'll have to live with it, but it got me thinking and investigating whether I could return it to the rock solid FW version 8. I found the service manuals online, and someone was nice enough to post the service menu. The service menu has a setting for flashing the firmware
and in the Service/repair manual I found the chip
[this was a few months ago I think there was just one chip but I'd have to go back & look to be more clear on it, that was soo many side projects ago] that holds the firmware (physical chip) and it has a reset/clearing pin on it.
This was in regards to a different unit (my BDP-S560) than the one in this thread, but it likely parallels it. I stalled out (lack of knowledge) of how to actually do what the techs in Sony's Laredo repair facility do so I tried posting in various places seeking information or gem of all gems someone that works for Sony or has the technical knowledge to know what's needed but that never arrived. I felt I needed to understand at least the following things if not more before proceeding: Do they have a special piece of equipment? Do they simply short the pin to clear out the firmwares memory? Or would that leave you with a blank chip that needs to be programmed? (something I also could not do) rendering my unit useless.
When Sony's repair facility techs re-flash the firmware what exactly are the steps?
I have moved on past the BDP-S560 so I'd be willing if someone could explain from experience how it all works & if the end user could clear the memory / firmware and then reload the desired firmware I might be interested in trying.