Downgrade BD-D5300 or patch exeDSP

[kszosze]

Dear friends, I was trying to make a Firmware downgrade from a 1030 version to other without the Cinavia protection, following the instructions at the forum. It doesn't work for me, so I try the funny method, patch the firmware by myself, that's no problem for me, so I downloaded the las oficial firmware for my BD-D5300
http://downloadcenter.samsung.com/conte ... M53BSP.zip
unzip into a folder, download the Samygo Firmware Parcher.py and try to decrypt it following the instrucctions. It doesn't work, it gave me that message:

SamyGO Firmware Patcher v0.34 (c) 2010-2011 Erdem U. Altinyurt

-=BIG FAT WARNING!=-
You can brick your TV with this tool!
Authors accept no responsibility about ANY DAMAGE on your devices!
project home: http://www.SamyGO.tv

Firmware: B-BRCM53BSP v1030.0

AES Encrypted CI+ firmware detected.
Processing file exe.img.sec
Decrypting with AES...
secret key : A435HX:d3e90afc-0f09-4054-9bac-350cc8dfc901-7cee72ea-15ae-45ce-b0f
5-611c4f8d4a71
Decrypting AES...

Decrypting with XOR Key : B-BRCM53BSP
Crypto package found, using fast XOR engine.

Calculated CRC : 0x5BD0D93D
Error on Decryption

So I try do download the svn code and try with another versi?n, same result. I think may be a problem with getting the real CRC code. I'm not a Pyhton developer, almost nowadays, so I think I can fix.
Taking a look at the source code I don't see (I think) suppor for that firmware version (B-BRCM53BSP) isn't it?
So, it could be posible get a new versi?n cover that firmware version, or, if can't, how can I get the necesary info to make the improvement?

thanks and sorry by my bad english.

[juusso]

we don't know firmware decryption key, that's why you get error. No key, no support.

[kszosze]

Ok I understand, There is a way to get the key? I mean.. telnet access to device and getting the necesary files? I can try to do it if u can say me how to...

I've installed the SamyGo Extension and now i'm trying to get telnet access.

Thanks!

[juusso]

Yes, if you somehow get root access to device, then yes, we could make dump of firmware (decrypted sure).

[kszosze]

While I'm looking for get root access or get decrypted the firmware, I found and old V 19 firmware and downloaded it.. but I don't know how to install it into my Blue Ray Player.. any one has any idea about how to do it? or it's no possible?

[firefox50]

hi .. did you find any solution ?? would be great if you did ..plz kindly inform me .. i have bd d5300 with firmware 1031.. thanks