Bricked LG TV after automatic update 43UM7199PLB 27.10.2022

[Ioan Alexandru]

I have accepted to update the TV firmware after being requeste many times by the menu. Big mistake!
After the update was finished the screen remains black, but the LCD screen is back lit so I can see it's started.
The magic remote has the microphone function and I can still search using the voice for youtube videos and the sound is playing.
o the TV is functional just I have a black screen

I tried after to run the update from USB after manually downloading this update: SW File(Version 05.30.11)
from 

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No menu is showing, screen is still black
A folder was create by the TV and it contains a file
D:\LG Smart TV\TN\INFO

With this content:
{"INFO":"{ \"core_os_release\": \"4.9.7-11\", \"returnValue\": true }{ \"device_name\": \"k5lp\", \"returnValue\": true }"}

Any solution for me? Do I have to change the TV motherboard? I want a cheaper solution, not paying for a new motherboard in service.

[Jean-Yves Martin]

My TV too.
After the update my screen remains black. Back light is on and the TV is working. I can start Netflix, play content, hear it, adjust volume etc, but not matter what I do, I cannot get it to display a picture at all.

I have tried soft resetting by unplugging it for 30 minutes, holding the power button for 60 seconds etc. Nothing works.

It's this TV. 
I can't even download a firmware to attempt a manual update.

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How does one fix this?
 

[Cedric]

Hello,
I was doing Webos 05.30.11 update on my Nanocell SM8100PVA when I saw your messages, I stopped it at 97%...
Have you been able to solve your problems ?
 

[Jean-Yves Martin]

26 minutes ago, Cedric said:

Hello,
I was doing Webos 05.30.11 update on my Nanocell SM8100PVA when I saw your messages, I stopped it at 97%...
Have you been able to solve your problems ?
 

I don't know what is wrong with my tv.

The image came back for a day, then on day 2 the left side of the screen started dimming every few seconds, then full bright again.. but now with scan lines.

Now it's completely dead again

[Cedric]

8 minutes ago, Jean-Yves Martin said:

I don't know what is wrong with my tv.

The image came back for a day, then on day 2 the left side of the screen started dimming every few seconds, then full bright again.. but now with scan lines.

Now it's completely dead again

Have you tried to reset your TV to factory settings, and to call LG support ? an official patch shouldn't break the TV this should be covered...
Your description remind me a not compatible screen resolution or frequency...

[Jean-Yves Martin]

30 minutes ago, Cedric said:

Have you tried to reset your TV to factory settings, and to call LG support ? an official patch shouldn't break the TV this should be covered...
Your description remind me a not compatible screen resolution or frequency...

I've tried everything.

Sometimes the image comes back, but only the right side of the screen.

[Cedric]

On 11/4/2022 at 4:34 PM, Jean-Yves Martin said:

I've tried everything.

Sometimes the image comes back, but only the right side of the screen.

I feel sorry for your tv, I really hope LG will fix your it.

If only it was not so complicated to downgrade firmware...