BD Firmware Downgrade (SamyGO Proof of Concept)

Samsung's BluRay player related hacks.

punkguy
Posts: 2
Joined: Sat Sep 23, 2017 4:26 am

Re: Firmware Downgrade D-Series (SamyGO Proof of Concept, BD

Post by punkguy » Sat Sep 23, 2017 5:12 am

arris69 wrote:
Fri Jun 22, 2012 1:29 pm
chicky2207 wrote:Hi, do you planning downgrade firmware for HT-D5550?

Thanks for reply.
no, no plans for "downgrade" for FIR* based devices.
What does this mean? What are FIR based devices? Does this include. HT-E4500 network blu ray player / Home theatre? Sorry to have replied to you I can see you are very busy but if you can shoot me a quick yes / no answer may prevent wastage of any more of my time (and yours. Obviously)

Thanks

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greenhorn
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Re: BD Firmware Downgrade (SamyGO Proof of Concept)

Post by greenhorn » Thu Sep 28, 2017 3:31 pm

Hi,
Sorry for the delay. FIR means devices that include that letters in the firmware. You can post a photo of the FW version and will check.
TV: UE40F7000 - T-FXPDEUC-1115.0 - SamyGO Extensions on F series
TV: UE55ES7000S - T-ECPDEUC-2003.4 - SamyGO tool Right from USB - no develop account is needed
TV: UE40C6710 - T-VALDEUC 3011 - Hacking TV over Hotel mode (C650 T-VALDEUC-3009.2)
BD-Player: BD-E6100 - B-FIRBPEWWC 1063.3 - rooted, no more Cin@vi@
NAS: CIFS: MAG250 NFS: Playon!HD

kevinallein
Posts: 2
Joined: Tue Jul 04, 2017 7:43 am

Re: BD Firmware Downgrade (SamyGO Proof of Concept)

Post by kevinallein » Sat Jan 13, 2018 12:42 am

Sorry if my question is stupid, but I have searched now for a while and cannot find the answers:
- I found in this thread the comment, but the patched firmware cannot be installed through the USB method, but only through the DNS trick. But can someone please explain, why it behaves differently ?
- My biggest question is, how the version number is encoded in the firmware and how it can be patched. In the start of this thread, the following statement is made: "firmware for some devices are not patched, it's original samsung firm with just changed versions number to xx90". So could this be done for any Samsung BD player, also my BD-J5500 ?

Thanks

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juusso
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Re: BD Firmware Downgrade (SamyGO Proof of Concept)

Post by juusso » Sat Jan 13, 2018 9:14 am

It couldnt be done via usb unless you know how digitaly sign your modified firmware.
LE40B653T5W,UE40D6750
Have questions? Read SamyGO Wiki, Search on forum first!
FFB (v0.8), FFB for CI+ . Get root on: C series, D series, E series, F series, H series, exeDSP/exeTV patches[C/D/E/F/H]

DO NOT EVER INSTALL FIRMWARE UPGRADE

kevinallein
Posts: 2
Joined: Tue Jul 04, 2017 7:43 am

Re: BD Firmware Downgrade (SamyGO Proof of Concept)

Post by kevinallein » Sat Jan 13, 2018 1:25 pm

OK, now I understand. I would have thought, that the Signature is checked the same way, whether you use USB or Network, but apparently this is not the case. Could you please also answer the second question, how to patch the firmware version number ? Would that allow me to downgrade my BD-J5500 to an older firmware version, where I can still enable region free for DVD playback ?

zoelechat
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Re: BD Firmware Downgrade (SamyGO Proof of Concept)

Post by zoelechat » Sat Jan 13, 2018 3:28 pm

No, Samsung fixed that trick about 5 years ago (from early E, you have J, do the math).
I do NOT receive any PM. Please use forum.

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juusso
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Re: BD Firmware Downgrade (SamyGO Proof of Concept)

Post by juusso » Sat Jan 13, 2018 6:49 pm

...and DNS trick does not work anymore. No advice at the moment.
LE40B653T5W,UE40D6750
Have questions? Read SamyGO Wiki, Search on forum first!
FFB (v0.8), FFB for CI+ . Get root on: C series, D series, E series, F series, H series, exeDSP/exeTV patches[C/D/E/F/H]

DO NOT EVER INSTALL FIRMWARE UPGRADE

xaviermecon
Posts: 1
Joined: Sun Jan 14, 2018 4:16 am

Re: BD Firmware Downgrade (SamyGO Proof of Concept)

Post by xaviermecon » Sun Jan 14, 2018 4:45 am

Hi, please help me!!!

I have a BD-H5900 with fw version 1016.3 of Nov-2017. I can downgrade fw version ?

zoelechat
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Re: BD Firmware Downgrade (SamyGO Proof of Concept)

Post by zoelechat » Sun Jan 14, 2018 10:19 am

NO.
I do NOT receive any PM. Please use forum.

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