Somene released a solution to solve the PS3 downgrade bluray problem,they announced that the DRL1/DRL2 files lost when use the PS3 breakPS3 modchipP3GO to downgrade PS3 , that's why we meet the problem, and they released the method to fix it.
Notice: This method is just a experiment, not a confirmed solution,take cars if you want to try it in case it takes more problem!
Before you use the method , you need to know enough knowledge about how to use a PC with BluRay reader and HEX editor.
To quote:"
There is now a *hacky* method of doing a safe downgrade for users who don't have the ability to do a backup of their drl files. This method can also be used to fix a ps3 with broken playback if you know the newest disc your ps3 has played.
If you go out and rent Inception(high mkb) and play this in your ps3 before downgrading this spreadsheet will be updated with the hex values of the DRL files to recover your blu ray playback.
I don't have the DRL data from inception yet, but this is a good candidate as it has one of the higher mkb versions. Once I get it I will add it to the spreadsheet. Let's say that The Dark Knight was the highest MKB version that your PS3 has seen, than the below data would be used to restore your playback.
We have found out that the mkb from the title that updated your drl files can be used to restore your playback completely. The MKB data is located inside BD://AACS/MKB_RO.inf; If you use a PC BD drive from windows, mac, linux, etc. You can extract this data. We are working towards a method of doing this from the PS3 directly, but so far it appears GAMEOS may be blocking this file.
If this file is opened in a hex editor the beginning of the file contains the Type and Version record?
ie: 10 00 00 0C 00 04(mkb version) 10 03 00 00 00 09 - The Dark Knight
20 00 00 34(record length) 00 00 00 00 00 00 00 00 44 8F F5 FA B4 79 A3 FD FC B9 92 01 35 5C 21 3B D9 8C D3 20 06 B0 76 B5 46 92 1E 46 52 16 EE A5 5D 1E 7B 2D 02 C7 6D 0A - The Dark Knight
Combining the Type and Version Record with the DRL data gives you the hex contents of the proper DRL1/DRL2 files if this disc was the highest mkb version your ps3 has seen. This is called a Partial MKB.
The above hexed over your broken drl will restore your playback. This isn't surefire if you've played another movie that is higher than inception or have updated your drl with a different movie that is the same mkb as inception. All in all you just need to know which newest disc you have played and that will give you the method to restore your playback.
FYI: Merry X-Mas! This is a gift to all! Thanks to HI3 for doing all of the leg work in understanding the different record types."
UPDATE: I received the following PM earlier today:
I've been working with Hi3 and the rest of the crew at #ps3bluray on Efnet and it's urgent that the story about bluray playback problem being solved be removed because the research is not even CLOSE to final and the person who released the information was not authorized to do so.
So its not finalized yet and you should proceed to do this at your own risk. According to hi3, "If the traitor system is triggered it could lead to drive/host revocation en-masse in the future."
Just like what i said in the beginning , this method need more tests to prove it,let's stay focused on the news , hope there will be a tool or user manual come out !
