How To Downgrade webOS TV Firmware Tutorial

[Elee09]

16 hours ago, harry201204 said:

@Elee09 Unfortunately I wasn't able to succeed in rolling the firmware back, so I'm stuck on the current version.

I tried using the latest downgrade tool that @Dejan Fehirov linked me but sadly that didn't help, I still got the same error message and wasn't able to complete the downgrade. If anyone has any more ideas on how to fix the issue I'd be really appreciative though!

@harry201204  I was able to downgrade my firmware using an epk file I found on a russian forum. After installing this one I could then install the  official ones from the LG.

Just make sure to edit the CheckSWManualUpdate with the SW version you will be using.

http://webos-forums.ru/topic3157.html

Translated - http://www.microsofttranslator.com/bv.aspx?from=&to=en&rr=DC&a=http%3a%2f%2fwebos-forums.ru%2ftopic3157.html

Look for the files listed in this post: 

[Arnaldo]

 

PLEASE FOR MODEL 42LB7000 UPDATE TO VERSION 05.05.55 AND IT SEES BAD HELP!

[Dalvir]

Hello Simon

I own 58UF8300 tv and I live in Canada. I tried this method many times, but my tv says unknown error.  

[Mohamed Bahaa]

hello my lg model is.   60LB6520   my frimware now is 5.5.55 and its bad coz of juddering i need to downgrade to old frimware  can you help me plz . 

[mister8ight]

What's with this???

[lukval]

On 7/28/2019 at 2:49 PM, mister8ight said:

What's with this???

Isn't it false positive? Did you report it to Comodo support?

 

[Dmbland]

Hi,

 

Is this topic still relevant for newer LG Models? I have a 55C8PLA Model and wish to downgrade it

[Tricks And Fun]

On 9/21/2015 at 6:17 AM, SIMON said:

LGDTVUPDATER  
 
1. Download LgDTVUpDater [ 

link hidden, please login to view

 |  ] Updated 19 OCT 2015
2. Unrar and put LgDTVUpDater folder in C:\
3. Open C:\LgDTVUpDater\dns\AcrylicHosts.txt
4. Change 192.168.0.11 with your 
5. Save and exit
6. Go back to C:\LgDTVUpDater folder
7. Run startDNS.bat and don´t close it
8. Run startHTTP.bat and don´t close it
9. Go to TV Menu > Network Settings > Ethernet/WiFi > Edit > Uncheck Set Automatically > Change DNS IP to your local IP address > Connect
10. Go to General > About This TV > Check For Updates
11. Accept downgrade to the first firmware TV
12. Restart TV

13. Back to TV Menu > Network Settings > Ethernet/WiFi > Edit > Check Set Automatically
14. Go to General > About This TV > Check For Updates and follow TV instructions OR download available Software_File dedicated for your TV, unrar and put *.epk file in LG_DTV folder at USB stick
15. Mount USB stick to USB port at your TV then accept upgrade when message prompt on the screen
16. Restart TV and follow TV instructions

 
For best performances go to TV Menu > General > Reset to Initial Settings
 
 
Voila! 
 
 
 
NSU EMU BY SMX
 
If your attempt to downgrade your TV with LgDTVUpDater for some reason was not successful, you can try to use tool prepared by SMX.
Everything you need - NSU Emu by SMX and how to use it - you can found .

 

After update latest version 5.80.25 my TV wifi turned off its doesn't opening .so how can I downgrade without WiFi or internet 

Remaining all functions working fine.

Issue is wifi turned off 

Wifi-Direct  turned off

All internet options turned off 😭😭😭

Model: LG 32LJ573D-TA

LG WEBOS SMART TV 

ITS  ONE year old ..

Please help me 😭😭😭😭😭😭

[Tricks And Fun]

On 9/21/2015 at 1:35 PM, davidisom said:

1. Worked like a dream for me downgraded to 3.23.13

2. Rebboted now upgrading via manual update.

3. Upgraded to 4.30.16

4. Reboot and tv has found update via automatic update which is in progress

5. Udpate 5.00.04 installed

Straight forward and worked without issue.

Thank you Simon.

David Isom

Bro ...share that firmware to me

Please

My TV webos LG 32lj573d-ta

[Dejan Fehirov]

just reset your tv to factory default and everythin will be fine..no need to mess with firmware

[Jamal Mohsin]

dear SIMON plz help

i have lg 55lm8600-ca and its os stuck in old version and lg stop upgrade i want to downgrade so that i can update the full firmware. now my tv has a limited firmware

[Pir8pete]

Programs used;
-Apache HTTP server (2 methods, .php or .laf phass_code)
-Acrylic DNS server (note: dualserver is crap don't bother using it)


Topics;
https://www.lgwebos.com/topic/1997-how-to-downgrade-webos-tv-firmware-tutorial/

link hidden, please login to view

Apache access logs;

2019 B9 = 192.168.1.234 - - [21/Jan/2020:07:17:45 -0500] "GET  /fts/gftsDownload.lge?biz_code=IBS&func_code=ONLINE_EPG_FILE&file_path=/ibs/online/epg_file/20200121/f_1579591589501tmsepgcrawler_merged000008441_202001211200_06_20200121070000.zip  HTTP/1.1" 404 1062 "-" "-"
2017 W7 = 192.168.1.108 - - [21/Jan/2020:07:14:12 -0500] "POST /CheckSWManualUpdate.laf HTTP/1.1"  200 36 "-" "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT  5.1; SV1)"

Looks like on 2019+ LG has changed the way the TV looks for the firmware file. I believe they have also made it dynamically request the name base on date and TOD.
Any programmers out there know how to get around this?

 

I'm trying to figure out is why the 2019 B9 is not pushing out a otaID like the 2017 W7. The Apache server is not grabbing any info, No request data when manually checking for a new firmware update? I'm thinking it's in a different format so the Apache with it's current settings just ignores it?

I have tried both methods .php and .laf

# This will redirect all requests to files with .laf extension to .php ones
# Example: CheckSWManualUpdate.laf --> CheckSWManualUpdate.php
#
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)\.laf$ $1.php [L]
   

2017 W7

192.168.1.108 - - [15/Dec/2019:07:03:33 -0500] "POST /CheckSWManualUpdate.laf HTTP/1.1" 200 848
192.168.1.108 - - [15/Dec/2019:07:03:40 -0500] "GET /starfish-atsc-secured-m16p-611.dunggir.m16p-61113-05.80.50-prodkey_usb_V3_SECURED.epk HTTP/1.1" 206 1716
192.168.1.108 - - [15/Dec/2019:07:03:40 -0500] "POST /SWDownloadStartLog.laf HTTP/1.1" 200 5
192.168.1.108 - - [15/Dec/2019:07:03:41 -0500] "GET /starfish-atsc-secured-m16p-611.dunggir.m16p-61113-05.80.50-prodkey_usb_V3_SECURED.epk HTTP/1.1" 206 50164

 

[GNRMIKE]

Hi everyone,

i was trying to follow the procedure of downgrading to older version on my LG 47LM7610 but i am stuck on where to download older version for my TV Model and what to edit in : HE_DTV_W15U_AFADABAA.File to be able to localize my downloaded older update. My TV have the latest update 04.42.08 and Netflix is crashed, so i am trying to downgrade to older version then update again with the new firmware file on my USB.

I appreciate your help guys ASAP.

 Cheers

[pixellegolas]

I think I have succesfully made the HE_DTV file and placed the correct firmware where it should be etc. But the tv only says "The FW you are trying to install is older than tv FW, so skipping" or similar. It does not want to downgrade.

 

Is this the only way of downgrade or can we do with a secret menu, like service menu?

[Pir8pete]

13 hours ago, pixellegolas said:

I think I have succesfully made the HE_DTV file and placed the correct firmware where it should be etc. But the tv only says "The FW you are trying to install is older than tv FW, so skipping" or similar. It does not want to downgrade.

 

Is this the only way of downgrade or can we do with a secret menu, like service menu?

 whats the name that your B9 or C9 requested? my W7 example: HE_DTV_W17H_AFADATAA

and whats all the info inside it? I need to you post this too

[Duarte]

hello all

Lg 47LB671V-ZB here ,05.05.70 , webos 1.4.0-2532 , HE_DTV_WT1M_AFAAABAA

i'm having some troubles in the tv, i want to downgrade firmware but no way , always showing that the firmware version is older then that installed .

can someone give me a hand please?

[anuj gupta]

I would like to downgrade my  LGUHDTV UK6360PTE firmware from 05.10.45 to previous version .Request to kindly let me know the procedure. LgDTVUpDater is no more available on the links shared 

[Pir8pete]

On 4/24/2020 at 3:18 AM, anuj gupta said:

I would like to downgrade my  LGUHDTV UK6360PTE firmware from 05.10.45 to previous version .Request to kindly let me know the procedure. LgDTVUpDater is no more available on the links shared 

link works fine, heres my version of this if you'd like ->

link hidden, please login to view

[anuj gupta]

@Pir8pete  Thanks for sharing the procedure . Hope if you could help me out with previous version firmware of LG UK series  05.10.35 or 05.10.40 . 

[lbm_14]

Hi @SIMON hi all, I need downgrade my TV.

 

I'm from Argentina.

Tv model: 43UJ6560-SB

Actually webOS TV version: 3.8.0-61208

Actually software version: 05.8030

Model NM: HE_DTV_W17M_AFADATAA

 

Thanks!!!

[DjDiabolik]

Hi........... i have need to TRY to reinstall the 3.21.40 firmware on my LG LF590V-ZA.

 

At right now, also i have already ask in this same forum, i have a little trouble whit opening of "Setting" menu at first time after i turn on my tv from standby. When i do it my TV goes in freeze and i see my TV Crash and made somethings like a self reboot.

 

I have read ALL thread but i don't have really understand how all procedure it's works........ it's someone can explain how i need to setup ?? Other question it's:

- My TV it's connected by LAN.... my ip pc it's 192.168.1.2 (router 192.168.1.1) and the tv have 192.168.1.5 both have a fixed ip... it's works in this mode ?

- It's this procedure works on current Windows 10 version ??

- How i can ask or contact someone to find i procedure for do this and try to fix this issue whit my exact tv model ?

 

I will try to citate some member like @SIMON or the upper here @Pir8pete

[CosmicPoweR]

I tried  to downgrade my the firmware but TV shows update failed because SW version is lower than the TV SW version. Anyone can help? Thanks!!

Model: LG 49UB850T
Current TV SW version: 05.05.90

NUS Request
<REQUEST>
 <PRODUCT_NM>webOS</PRODUCT_NM>
 <MODEL_NM>HE_DTV_WT1H_AFAAABAA</MODEL_NM>
 <SW_TYPE>FIRMWARE</SW_TYPE>
 <MAJOR_VER>05</MAJOR_VER>
 <MINOR_VER>05.90</MINOR_VER>
 <COUNTRY>MY</COUNTRY>
 <AUTH_FLAG>N</AUTH_FLAG>
 <IGNORE_DISABLE>N</IGNORE_DISABLE>
 <ECO_INFO>01</ECO_INFO>
 <CONFIG_KEY>00</CONFIG_KEY>
 <LANGUAGE_CODE>en-MY</LANGUAGE_CODE>
</REQUEST>

NUS Reply for HE_DTV_WT1H_AFAAABAA-0.req
<RESPONSE>
 <RESULT_CD>900</RESULT_CD>
 <MSG>Success</MSG>
 <REQ_ID>882674538</REQ_ID>
 <IMAGE_URL>http://snu.lge.com/epks/</IMAGE_URL>
 <IMAGE_SIZE>662123743</IMAGE_SIZE>
 <IMAGE_NAME>starfish-dvb-secured-goldfinger-23.ashley.goldfinger-2309-05.00.25-prodkey_usb_V3_SECURED.epk</IMAGE_NAME>
 <UPDATE_MAJOR_VER>05</UPDATE_MAJOR_VER>
 <UPDATE_MINOR_VER>5.91</UPDATE_MINOR_VER>
 <FORCE_FLAG>Y</FORCE_FLAG>
 <KE></KE>
 <GMT>26 Jul 2020 11:34:06 GMT</GMT>
 <ECO_INFO>01</ECO_INFO>
 <CDN_URL>http://snu.lge.com/epks/starfish-dvb-secured-goldfinger-23.ashley.goldfinger-2309-05.00.25-prodkey_usb_V3_SECURED.epk</CDN_URL>
 <CONTENTS></CONTENTS>
</RESPONSE>

Log:

26-07-20 13:34:06    Got NSU Request from 127.0.0.1
26-07-20 13:34:06    Parsing Request...
26-07-20 13:34:06    #### Request Details ####
26-07-20 13:34:06    #  Product Name: webOS
26-07-20 13:34:06    #  Model Name HE_DTV_WT1H_AFAAABAA
26-07-20 13:34:06    #  Software Type FIRMWARE
26-07-20 13:34:06    #  Version Major 05
26-07-20 13:34:06    #  Version Minor 05.90
26-07-20 13:34:06    #  Country MY
26-07-20 13:34:06    #  Device ID
26-07-20 13:34:06    #  Auth Flag N
26-07-20 13:34:06    #  Ignore Disable N
26-07-20 13:34:06    #  Eco Info 01
26-07-20 13:34:06    #  Config Key 00
26-07-20 13:34:06    #  Language Code en-MY
26-07-20 13:34:06    #### END ####
26-07-20 13:34:06    Skipping Request dump (same data already on disk)
26-07-20 13:34:06    Found @ALL_OVERRIDE, providing starfish-dvb-secured-goldfinger-23.ashley.goldfinger-2309-05.00.25-prodkey_usb_V3_SECURED.epk for HE_DTV_WT1H_AFAAABAA
26-07-20 13:34:06    Providing epk file epks/starfish-dvb-secured-goldfinger-23.ashley.goldfinger-2309-05.00.25-prodkey_usb_V3_SECURED.epk
26-07-20 13:34:06    Built Response: 
26-07-20 13:34:06    <RESPONSE><RESULT_CD>900</RESULT_CD><MSG>Success</MSG><REQ_ID>882674538</REQ_ID><IMAGE_URL>http://snu.lge.com/epks/</IMAGE_URL><IMAGE_SIZE>662123743</IMAGE_SIZE><IMAGE_NAME>starfish-dvb-secured-goldfinger-23.ashley.goldfinger-2309-05.00.25-prodkey_usb_V3_SECURED.epk</IMAGE_NAME><UPDATE_MAJOR_VER>05</UPDATE_MAJOR_VER><UPDATE_MINOR_VER>5.91</UPDATE_MINOR_VER><FORCE_FLAG>Y</FORCE_FLAG><KE></KE><GMT>26 Jul 2020 11:34:06 GMT</GMT><ECO_INFO>01</ECO_INFO><CDN_URL>http://snu.lge.com/epks/starfish-dvb-secured-goldfinger-23.ashley.goldfinger-2309-05.00.25-prodkey_usb_V3_SECURED.epk</CDN_URL><CONTENTS></CONTENTS></RESPONSE>
26-07-20 13:34:06    Sending Response...

 

[myloo]

Hello everyone, i need to help to downgrade my 43UJ651V tv. I succesfully apply all steps and at the last step seems this error message in the tv screen:

 

Update failed because software version is earlier than the version installed on the TV.

 

5.80.50 version installed on the tv now. But i want to return 04.70.55. Is this possible? Can anyone help me about this? Additionally, i am in Turkey. I want to install real official firmware. Can anyone send me the right firmware for me to install 04.70.55 ( I dont want to have language problems. I see the LgDTVUpdater package RU version)?

 

[myloo]

Hello friends, i think i found a way to downgrade 2017-2020 models tv (now its not possible by using current methods). The process is carried out through a computer using an RC232 cable. Can we overcome the obstacle to revert to old software using this method? Do you think this is possible? The link I provided is in Turkish, but you can translate it into English.

 

link hidden, please login to view

[McSingin]

On 8/5/2020 at 6:33 AM, myloo said:

Hello friends, i think i found a way to downgrade 2017-2020 models tv (now its not possible by using current methods). The process is carried out through a computer using an RC232 cable. Can we overcome the obstacle to revert to old software using this method? Do you think this is possible? The link I provided is in Turkish, but you can translate it into English.

 

link hidden, please login to view

Slm. LG OLED55C7V MODEL TV için 5.80.30 veya 5.80.50 imkanı varmı acaba.

[minhnguyen4575]

Mình đã làm như bạn hướng dẫn nhưng vẫn không được. giúp tôi!

HE_DTV_W17P_AFADABAA

<RESPONSE><RESULT_CD>900</RESULT_CD><MSG>Success</MSG><REQ_ID>00000000019044989056</REQ_ID><IMAGE_URL>http://snu.lge.com/SWDownload.laf</IMAGE_URL><IMAGE_SIZE>841527141</IMAGE_SIZE><IMAGE_NAME>starfish-dvb-secured-k3lp-573.drto.k3lp-57304-04.70.04-prodkey_nsu_V3_SECURED.epk</IMAGE_NAME><UPDATE_MAJOR_VER>04</UPDATE_MAJOR_VER><UPDATE_MINOR_VER>70.04</UPDATE_MINOR_VER><FORCE_FLAG>Y</FORCE_FLAG><KE></KE><GMT>29 Sep 2017 06:46:48 GMT</GMT><ECO_INFO>01</ECO_INFO><CDN_URL>http://su.lge.com:80/GlobalSWDownloadCdn.laf?IMG=/201709/starfish-dvb-secured-k3lp-573.drto.k3lp-57304-04.70.04-prodkey_nsu_V3_SECURED.epk</CDN_URL><CONTENTS></CONTENTS></RESPONSE>

Edited October 3, 2020 by minhnguyen4575
bổ sung thông tin

[R4]

@CosmicPoweR did you manage to figure it out? i'm getting the same error.

[hepmisafir]

On 8/3/2020 at 5:10 AM, myloo said:

Hello everyone, i need to help to downgrade my 43UJ651V tv. I succesfully apply all steps and at the last step seems this error message in the tv screen:

 

Update failed because software version is earlier than the version installed on the TV.

 

5.80.50 version installed on the tv now. But i want to return 04.70.55. Is this possible? Can anyone help me about this? Additionally, i am in Turkey. I want to install real official firmware. Can anyone send me the right firmware for me to install 04.70.55 ( I dont want to have language problems. I see the LgDTVUpdater package RU version)?

 

Unfortunately the same problem for me and couldn't solve it. Any ideas guys?

[[email protected]]

Hi. Is it still not possible to downgrade on LG TVs 2019+

I am on an engineers update as LG took too long to bring one out, now that they have I want to get back to the normal one but the n umber is lower than engineers.

[Ranton]

i could not downgrade  and  an error msg came 'upadate failed because SW version is lower than TV SW version'. My current firmware 05.05.45. This version  is not working for netflix 4K film. could someone help? I need to downgrade to the previous firmware 05.05.45. (work for netflx 4K film)