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How To Downgrade webOS TV Firmware Tutorial


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Hello again guys. First, thank you for your thanks, it's very motivating. ;) Nice to see satisfied users, now we have to do something for the others. I could not do anything earlier, because I had problems with my network, but finally I updated LgDTVupdater and now you can download it and try to downgrade your firmware. I hope it goes well now. If not, we will try to do it individually. So let's try and please let me know about successes. Good luck.

 
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It actually worked, woohoo! I successfully downgraded to 3.23.32. Now how do I upgrade to 04.41.39? I created a USB drive with LG_DTV folder and the starfish-atsc-secured-m14tv-32.arches-3239-04.41.39-prodkey_usb_V3_SECURED.epk file in it. But when I insert in the TV, only SmartShare message pops up, no update. Thanks for any more info!

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It says No update was found.

 

Okay still working on it.

 

 

It actually worked, woohoo! I successfully downgraded to 3.23.32. Now how do I upgrade to 04.41.39? I created a USB drive with LG_DTV folder and the starfish-atsc-secured-m14tv-32.arches-3239-04.41.39-prodkey_usb_V3_SECURED.epk file in it. But when I insert in the TV, only SmartShare message pops up, no update. Thanks for any more info!

 

Good. Try to update by OTA, them do it with USB.

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Just try and let us know. This knowledge also we need. I have only one TV model, you have to help me somehow.

I did try, see post #38. Everything works but when it says its updating nothing happens. Thanks.

 

Maybe the problem is with NZ ISP? Should I try using a VPN?

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Here is the

link hidden, please login to view

 

Okay, thanks, this is firmware file. I thought that you mean another file.

 

 

I did try, see post #38. Everything works but when it says its updating nothing happens. Thanks.

 

Maybe the problem is with NZ ISP? Should I try using a VPN?

 

Oh, sorry, you right. It is not ISP problem. I think it's your TV series 9xxx problem. 

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I read trough your script and I see that it forces HE_DTV_WT1M_AFAAATAA model to install firmware for HE_DTV_NC4M_AFAAABAA instead. Would that create any issues for getting back to stock firmware/OTA updates?

 

I am currently stuck on 3.23. and CEC is not working for my STB or any of my other components. I really need to get back on 04.41.39, which was the last version for my 70LB7100-UC TV before 5.00.04. I am unable to update via USB as I belive the firmware (starfish-atsc-secured-m14tv-32.arches-3239-04.41.39-prodkey_usb_V3_SECURED.epk) doesn't work because my TV thinks that it is HE_DTV_NC4M_AFAAABAA now. Nothing happens when I insert the USB drive and OTA does not find any updates either. How do I make my TV become the correct model HE_DTV_WT1M_AFAAATAA again? Or which 04.41.39 firmware do I need to download/install that is compatible?

 

Thanks for your help!

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To answer my own questions :), I was able to create an answer file and point the TV to a file that was server locally on my computer. It successfully upgraded to 04.41.39, wchich I got from the LG support site for my TV. Then I did an OTA update to 04.45.x and everything is back to stock. The model is HE_DTV_WT1M_AFAAATAA again, which is the right one. Thanks for the great tool Simon!! It makes upgrades and downgrades a breeze.

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Hi thanks for the great work on this. 

When i tried to update my 50LB650 TV using my desktop PC it wouldn't work, when I tried using my laptop it worked great. I think it was because the desktop PC has Windows 10 and the laptop windows 7.

Thanks again

 

I tried both win 7 and 10 and same thing happens, after accepting update nothing happens, it just says 'updating'.

 

Q. How long after accepting update do you wait?..and when do you restart the TV?

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