Downgrade File for TCL C6 (Current Version: V8-T658T01-LF1V534)

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BORZEEK

New member
Jul 1, 2022
1
0
Hello! Tell me what is the best firmware update for TCL C6US?

Also, tell me how to enable the engineering menu on this TV?
 

stasiof

Senior Member
Oct 9, 2013
2,515
974
Hello! Tell me what is the best firmware update for TCL C6US?

Also, tell me how to enable the engineering menu on this TV?
Post your firmware installed.

Service menu...
TV Settings > Picture > Advanced > Brightness > Contrast and type.... xxxx
xxxx=
1950 - General Service Menu (Design Menu)
9735 or 6428 - Subsection Factory Menu
9705 - Subsection Service Menu
6405 - subsection Hotel Menu
6425 - Running Time..and quick access to reset (Reset All and Reset Shop).
 

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kokar9

Member
Jul 26, 2022
7
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I have installed R820 on my TCL P6046 without problem, but I didnt see any differents in the content or original applications that were on the previous software V574.
What is the main differents between these softwares: V574, V575, R820 ?
 
Last edited:

skoca8

Member
Aug 6, 2022
13
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Guys would anyone of you have the changelog for R820? I would be curious if that solves DD+ passthrough as my 55UD6406 does not do that apparently rigght now ... currently on V575
 

skoca8

Member
Aug 6, 2022
13
0
I am following this steps but not taking update or flash the PKG file...

Firstly I format the pendrive in Fat32 mode... Then unzip the zip file and copied the update.pkg file into Fat32 pendrive. Then tv switched on and keep in standby mode... Then I inserting the pendrive into 2.0 usb port... But after inserting pendrive into 2.0 port tv power button not working.

I tried also with the remove the pendrive and after the power button work quick inserting the pendrive also not work.... Plz. Suggest ... What to do... Currently I am in V575 version.
Hi @arun7129 , have you ever resolved this? I have tried with 2 usb sticks so far, one (16G usb 2.0) did not do anything at all, second (8G usb 3.0) started the upgrade but it took approx 2mins (not that 5-7 as said in the tcl guide) and then tv booted and its still on V575. Btw TV type 55ud6406. Thnx for any advise here.

Also, if you are running on R820, is it any bteer compared to V575? Thnx
 

skoca8

Member
Aug 6, 2022
13
0
I have installed R820 on my TCL P6046 without problem, but I didnt see any differents in the content or original applications that were on the previous software V574.
What is the main differents between these softwares: V574, V575, R820 ?
Did it reset all apps after you installed R820? What pen drive you used please? I am unable to upgrade, it says that message (don't turn your tv bla bla), but after approx 2 mins its done and continues to start the tv ... in about section I still see V575
 

kokar9

Member
Jul 26, 2022
7
0
Did it reset all apps after you installed R820? What pen drive you used please? I am unable to upgrade, it says that message (don't turn your tv bla bla), but after approx 2 mins its done and continues to start the tv ... in about section I still see V575
I missed all apps and reinstalled them.
I used normal usb 4 gb formated with F32 and put it inside the lowest usb hole.
 

skoca8

Member
Aug 6, 2022
13
0
I missed all apps and reinstalled them.
I used normal usb 4 gb formated with F32 and put it inside the lowest usb hole.
Thanks, indeed i solved by putting the usb stick into usb 3.0 instead of usb (service) 2.0 .. tbh, the same experience, nothing better compared to previous fw (575), maybe even worse .. and tv still cant passthrough DD+ (which was advertised with tv as DD+ capable) , funny
 

arun7129

Member
Apr 26, 2021
39
0
Patna, Bihar
Read properly...this and previous page.....
Ok. Downloaded... But i am unable to update it.

1. Steps i followed as below...

1. Unzip to Zip folder and copied to Update.pkg file into formated FAT32 usb drive
2. Tv is on and inserted usb in USB 2.0
3. Press and hold to Power off button

Then its switiching off tv. not detecting update pkg file....

Also i have followd steps during tv power off, inserted usb drive... during restart tv power button press and hold till update option showing.. but in this steps also update pkg not dectecting.. Please help.
 

stasiof

Senior Member
Oct 9, 2013
2,515
974
Ok. Downloaded... But i am unable to update it.

1. Steps i followed as below...

1. Unzip to Zip folder and copied to Update.pkg file into formated FAT32 usb drive
2. Tv is on and inserted usb in USB 2.0
3. Press and hold to Power off button

Then its switiching off tv. not detecting update pkg file....

Also i have followd steps during tv power off, inserted usb drive... during restart tv power button press and hold till update option showing.. but in this steps also update pkg not dectecting.. Please help.
TV must be Off in first place (unplug power cord or long press on remote control ).....
Then press and hold TV power button and insert power cord back to power.

When TV is On. did recognise USB drive ,when inserted ?
If not ,try other USB drive.
 

arun7129

Member
Apr 26, 2021
39
0
Patna, Bihar
TV must be Off in first place (unplug power cord or long press on remote control ).....
Then press and hold TV power button and insert power cord back to power.

When TV is On. did recognise USB drive ,when inserted ?
If not ,try other USB drive.
If i am using local update with zip file without unzip. I am getting this error...

Currently i am in R810 version...
 

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arun7129

Member
Apr 26, 2021
39
0
Patna, Bihar
TV must be Off in first place (unplug power cord or long press on remote control ).....
Then press and hold TV power button and insert power cord back to power.

When TV is On. did recognise USB drive ,when inserted ?
If not ,try other USB drive.
Yes usb drive recognise, but after press and hold power button its switching off tv... Not taking update...
 

stasiof

Senior Member
Oct 9, 2013
2,515
974
If i am using local update with zip file without unzip. I am getting this error...

Currently i am in R810 version...
No local update for PKG file.
How you flash R810 in first place ?
Same how you flash R810, flash R820 also.

How many TV USB input has ?
Try to format NTFS also...
Read in this thread how to flash PKG file....is only 13 pages....
 

arun7129

Member
Apr 26, 2021
39
0
Patna, Bihar
No local update for PKG file.
How you flash R810 in first place ?
Same how you flash R810, flash R820 also.

How many TV USB input has ?
Try to format NTFS also...
Read in this thread how to flash PKG file....is only 13 pages....
R810 flash with OTA zip file... So i installed. But for R820 i have pkg file.. if OTA zip will be available.. then i will be able to flah..
 

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