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Re: TV D-Series Firmware Downgrade (SamyGO Proof of Concept)
Posted: Sun Nov 18, 2012 5:34 pm
by akirakaneda
Hye
I am trying to downgrade my UE46D6530 firmware.
Here is the information of my TV.
Model: UE46D6530
current Firmware version: T-GASDEUC-1018.0
Steps I followed:
1. Set the IP address --> 192.168.1.44
2. Set Subnet mask --> 255.255.255.0
3. Set IP router --> 192.168.1.1
3. Set DNS server --> 46.4.199.222
4. Turned off tv with remote, turned it back on (tried pulling the plug too)
5. Went to menu --support --> software upgrade--> by online
It just tells me "No Software to upgrade"
Help me please
greetings
Re: TV D-Series Firmware Downgrade (SamyGO Proof of Concept)
Posted: Tue Nov 20, 2012 1:11 am
by relativo
thanks, great job!
I downgrade D6100 firmware (T-GAS6DEUC) from 1020.1 to 1011.5 successfully with your procedure.
Re: TV D-Series Firmware Downgrade (SamyGO Proof of Concept)
Posted: Sat Nov 24, 2012 3:04 pm
by papajany
hi SamyGO
how r u? i hope u gonna be fine, u doing nice job, i bought a samsung 3d smart tv Model: ua46d6400ur last week, and yesterday i upgrade its firmware to t-gas6daac-1022.0, before it was something like 1019, i was searching on google for its apps, found ur site and know about ur samygo, now i want to use ur apps, want to downgrade my firmware to use ur apps, plz provide me some information
best regards
Re: TV D-Series Firmware Downgrade (SamyGO Proof of Concept)
Posted: Sat Nov 24, 2012 3:12 pm
by juusso
hi, all what you need for downgrade is on first post of this topic. Good luck.
Re: TV D-Series Firmware Downgrade (SamyGO Proof of Concept)
Posted: Mon Nov 26, 2012 1:36 am
by thwalker3
Did the DNS server go down? Was going to try a downgrade but can't get it to resolve anything...
Re: TV D-Series Firmware Downgrade (SamyGO Proof of Concept)
Posted: Mon Nov 26, 2012 4:31 pm
by thwalker3
Nevermind, DNS is resolving but something in the current fw on my tv makes it think "the internet is down" when I point to your DNS server. Doesn't look like you actually have fw posted for my tv (UN46ES7500) anyway as when I redirect the openapi "fw check" http request to your servers by hand, I get "ok" back.
Re: TV D-Series Firmware Downgrade (SamyGO Proof of Concept)
Posted: Mon Nov 26, 2012 4:45 pm
by thwalker3
Ah, I see what is happening... my TV appears to be requesting a recursive lookup for
http://www.samsung.com. It appears that your DNS server is configured to deny recursive lookup requests but the TV is expecting to find one that will...
Against google's DNS:
Code: Select all
$ dig http://www.samsung.com @8.8.8.8 +recurse
; <<>> DiG 9.9.2-RedHat-9.9.2-2.fc18 <<>> http://www.samsung.com @8.8.8.8 +recurse
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 22559
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;www.samsung.com. IN A
;; ANSWER SECTION:
http://www.samsung.com. 289 IN CNAME http://www.samsung.com.edgekey.net.
http://www.samsung.com.edgekey.net. 21589 IN CNAME http://www.samsung.com.edgekey.net.globalredir.akadns.net.
http://www.samsung.com.edgekey.net.globalredir.akadns.net. 889 IN CNAME e1717.b.akamaiedge.net.
e1717.b.akamaiedge.net. 9 IN A 173.223.183.41
;; Query time: 20 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Mon Nov 26 10:44:16 2012
;; MSG SIZE rcvd: 195
Against yours:
Code: Select all
$ dig http://www.samsung.com @46.4.199.222 +recurse
; <<>> DiG 9.9.2-RedHat-9.9.2-2.fc18 <<>> http://www.samsung.com @46.4.199.222 +recurse
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 52226
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;www.samsung.com. IN A
;; Query time: 104 msec
;; SERVER: 46.4.199.222#53(46.4.199.222)
;; WHEN: Mon Nov 26 10:42:52 2012
;; MSG SIZE rcvd: 44
Sounds like you need to allow recursive lookups to make some of the newer TVs happy.
Re: TV D-Series Firmware Downgrade (SamyGO Proof of Concept)
Posted: Mon Nov 26, 2012 5:03 pm
by thwalker3
Or perhaps it isn't the recursion option... lookups for "
www.samsungotn.net" (the host you redirect to try to trick the firmware update) against your DNS seem to work with recursion specified or not. But I never get there because the "test your internet connection" after modifying the DNS settings on the TV tries to lookup "
www.samsung.com" which your server doesn't resolve (as shown in the earlier dig output). The TV then "disables" (greys out) the "update firmware online" option.
Anyway, I can setup my own DNS to resolve "
www.samsung.com" as the TV expects but still point "
www.samsungotn.net" to your server but, as I said before, it looks like you don't host a "downgrade" for me TV as:
"
http://46.4.199.222/openapi/tv/T-ECPAKU ... 7/m_notice"
returns an xml file with:
<rsp stat="ok"/>
which I gather means "no update available"
Re: TV D-Series Firmware Downgrade (SamyGO Proof of Concept)
Posted: Mon Nov 26, 2012 5:30 pm
by juusso
You should skip internet connection testing, because it always fails if use our dns.
Re: TV D-Series Firmware Downgrade (SamyGO Proof of Concept)
Posted: Mon Nov 26, 2012 5:40 pm
by thwalker3
That isn't an option... it does it automatically on my TV whenever you change a network setting. If you explicitly stop it, the firmware appears to leave things that require network access greyed out in the menus.
Anyway, as I said, it doesn't appear that you have a fw downgrade hosted for my model, do you? (the URL I posted in my previous message includes all the info you need to tell).