SamyGO

I already successfully unbricked my TV using this method several times. BTW it seems to be your last option before you send it for repair

Update : there is actually a version 1005.1
I read elsewhere on the forum that some versions of T-MSV4DEUC the have shell unlocked but I dunno on which ones. If someone knows I'm interested.

the pin 4 ( TX on the TV side ) has a pull up resistor to the 3.3v line , but the pin 11 does'nt. Anyway data is always present on pin 4 at startup. Maybe is it a level compatibility problem ?

interesting question ! Could the TV be both client and server ?
If you get root access to the shell it may be possible to compile a DLNA server , stuff it into the TV and start it. Am I wrong ?

ah right , sorry BTW i'm a technician in electronics and i keep on swapping TX and RX lines
If my memory's correct there's no pull up resistor on RX pin.
So the problem is that you get no data from the TV ?

You'll get no echo of what you type in unless you entered the proper codes to unlock the TDM. maybe your cable is ok ?

@neil75 : you have to use the ex link cable , PC vga output is useless in this case

Stupid question , but did try to swap TX and RX lines ?
On the tv that have a VGA input the Ex link is wired to it . otherwise you should find a "service" jack socket

Here is the MAC address: ============================== [ TDsEEPROMStore Debug Menu ] ------------------------------ 0x01 : Create 0x02 : Destroy 0x03 : FlagCreate 0x04 : Read 0x06 : Physical Read 0x09 : Nvram Crash Verify ------------------------------ 0x99 : Exit Debug ----------------------------...

i added wired LAN. Some D490 main boards are fitted with SEMS23 ( not all of them tho) which has full embedded LAN controller , so it doesn't need the external Realtek controller. I just had to solder the missing ethernet socket and a few jumpers to get the hardware ready. I'll take some photos as s...

on T-MSV4DEUC 1006 The shell is locked for defs this firmware is pretty tightly locked by many ways... and it seems there is no earlier version