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Downgrade BD-D5300 or patch exeDSP

Posted: Wed Mar 20, 2013 9:55 pm
by 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 ...
unzip into a folder, download the Samygo Firmware 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

You can brick your TV with this tool!
Authors accept no responsibility about ANY DAMAGE on your devices!
project home:

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
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.

Re: Downgrade BD-D5300 or patch exeDSP

Posted: Sun Mar 24, 2013 6:36 am
by juusso
we don't know firmware decryption key, that's why you get error. No key, no support.

Re: Downgrade BD-D5300 or patch exeDSP

Posted: Sun Mar 24, 2013 2:35 pm
by 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.


Re: Downgrade BD-D5300 or patch exeDSP

Posted: Sun Mar 24, 2013 3:42 pm
by juusso
Yes, if you somehow get root access to device, then yes, we could make dump of firmware (decrypted sure).

Re: Downgrade BD-D5300 or patch exeDSP

Posted: Fri May 31, 2013 9:43 am
by 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?

Re: Downgrade BD-D5300 or patch exeDSP

Posted: Sun Dec 22, 2013 11:44 pm
by 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