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 »

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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Location: Eastern Europe

Re: BD Firmware Downgrade (SamyGO Proof of Concept)

Post by greenhorn »

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 »

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 »

It couldnt be done via usb unless you know how digitaly sign your modified firmware.
LE40B653T5W,UE40D6750,UE65Q8C
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. rooting K 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 »

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 »

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 »

...and DNS trick does not work anymore. No advice at the moment.
LE40B653T5W,UE40D6750,UE65Q8C
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. rooting K 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 »

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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Location: France

Re: BD Firmware Downgrade (SamyGO Proof of Concept)

Post by zoelechat »

NO.
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l1mpo
Posts: 1
Joined: Fri Mar 16, 2018 10:12 am

Re: BD Firmware Downgrade (SamyGO Proof of Concept)

Post by l1mpo »

@zoelechat i'm about to buy a used D4500... there's nothing i can do to clear Cinavia from it ? Read above that "no plans for "downgrade" for FIR* based devices." i've checked the firmware for the HT-D4500 in Samsung website and it is a FIR firmware... but then on the first page i see patched FIR firmwares... so i'm a little bit confused !!

Can you tell me the best models to search for ? i mean the easiest ones to patch Cinavia ..

Thank you

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