MAC adress on a PS51D490

[firtzbrau]

Hi all

I'm attempting to add network support on a PS51D490. Wired all the necessary components on the main board.
Tha hardware is ok but as this model is'nt supposed to have network support , the MAC address is set to ff:ff:ff:ff:ff:ff

I read somewhere that some models allow a MAC address change throught the serial TDM . Is it possible on D series with a T-MSV4DEUC firmware ? I rifled through the menu items with no luck

[firtzbrau]

I finally found where the MAC adress is stored.
It's in the NVM ( ATMLH142 which appears to be a 24C256) at address $1E04. Changed it successfully on a UE40D5700 (T-MST5DEUC) using an EEPROM programmer.
The NVM contents share the same structure between a T-MSV4DEUC and a T-MST5DEUC.May be the same on all MSTARs firmwares?
I gonna give it a try tonite and let you know

[juusso]

Could you please tell us more about your eeprom programmer-way? Really interesting!

[firtzbrau]

Hi juuso

You can use any cheap I2C EEPROM programmer/reader from ebay , or build this one http://www.lancos.com/prog.html It woks just fine with all flavors of EEPROMs. Just beware of the power supply voltage as samsung memories are usually powered with 3.3v.

Samsung main boards are equiped with EEPROMs from the 24Cxx series but they changed the markings on them.
It's totally safe to perform read operations since all of them share the same pinout.
AFAIK the ATMLH142 seems to be the biggest one ( 256Kbits).
The only risk is damaging the board during the NVM removal from the MB , as i didnt find a way yet to stop the I2C bus n read the contents directly from the MB without having to de-solder it.

BTW it seems there are interesting things in the dump that are not accessible through the TDM , including the MAC address.

Another possibly interesting approach is here : http://www.progskeet.com/home.php
It can read K9F1G08 flash memories and could provide a physical dump of the firmware. It could be useful if the contents are not AES encrypted...

[firtzbrau]

here are the dumps u got : http://www.filedropper.com/eepromdumps

what are the last ASCII strings at the end for ?

EDIT : reference and serial number of the PCB.

[firtzbrau]

I successfully set the MAC address on my D490 it's now connected to the net

I enabled the DLNA options using the TDM ( they're greyed out in the sub options menu even in advanced mode) but the DLNA client seems not to be implemented
does anyone have a TV with T-MSV4DEUC and a working DLNA ?

[joaofeijo]

Try changind the model to d550.
If it does not help you can try reading this : viewtopic.php?f=39&t=3849
Basicaly it?s something like that :
===============
[ TOP Debug Menu]
------------------------------------
1 : SubSystem Print On/Off
2 : Platform Print Setting
3 : TD Print Setting
4 : Performance Print Setting
5 : Sdal Print Setting
6 : Sdal Trace Setting
10 : Factory Debug
11 : TD Debug
12 : SubSystem DBG
20 : Performance File Write
21 : Louvre Print Setting
22 : JavaMW Print Setting
30 : Auto Lock DBG
------------------------------------
50 : ROSE Debug
60 : MediaLink Debug
70 : Jade Debug
====================================
99 : Exit
====================================

====================================
[ SsExeFactoryBase Debug Menu]
------------------------------------
1 : Factory.dat Loading Debug
2 : Hidden Menu Status
3 : GetItem Test
4 : Get SpecialItem Data
5 : Print SpecialItem Number
6 : Each Store Area, Version Clear
7 : Set SpecialItem Data
8 : Default Data Update Test
9 : Display & Excute Factory Menu
====================================
99 : Exit
====================================
10 : Factory Debug(tela 1)
9 : Display & Execute Factory menu (tela 2)
(1) for Control and
(1) again for SubOption

Temos :
9 ... (counted as Media Play DB)
10...(counted as Media Play Movie)
11...(counted as Media Play DLNA)
12...(counted as Media Play List)

11 para - Media Play DLNA..
Op?oes: InputDown(0)/Up(1)/Down100(2)/Up100(3)/Exit(99)
(0) - DLNA is now set to ON

[firtzbrau]

I enabled these options plus the Allshare in the config options menu yesterday , the TV "sees" my DLNA server but won't display the contents list ( the server is properly configured and works just fine with my UE40B7000 ) .

Whan i call the contents list it exits immediately giving an error on Ex link abt a 3D mode error.
I'll investigate tonite and post a log

[joaofeijo]

Try changing the model to d550 first. I?ve read in an Brazilian forum that some people achivied success just changing that.

[firtzbrau]

Thanks a thousand times lad !!
It did the trick!
so if you have a PS51D490 with a SEMS23 chip you can add wired network support in a few steps:

- add hardware :
- RJ45 socket ( the kind with impedance yokes built in)
- 5 straps ( 4 to bring the signal to the SEMS23 plus 1 to tell it it has LAN ) just follow the tracks and markings on the PCB , it's quite easy. I'll post photos soon anyway.
- set de MAC address in the NVM at address 1E04
- change the model to D550
- enable the Allshare option
- enable the options Joaofeijo wrote about in his previous post

and you're done . you get a D490 with LAN

Now gonna try n get this thingy rooted at last