Downgrade Software version of TCL L55C8US Android TV

[Gohamad]

Good day,

I have got TCL Android TV model No. L55C8US with software version: V8-R851T02-LF1V252.011680

I want to downgrade software version to: V8-R851T02-LF1V187.008562

My questions are:
1- Is it possible?
2- Where can I get this version (V8-R851T02-LF1V187.008562)?
3- how can install the version into the TV?

Your feedback is highly appreciated.

Regards.

 

[coolek33]

Yes. It's possible.

Celesw.tcl.com/Test/software/V8-R851T02-LF1V187.rar

Why to downgrade? There's v322 near by.

 

[Gohamad]

Yes. It's possible.

Celesw.tcl.com/Test/software/V8-R851T02-LF1V187.rar

Why to downgrade? There's v322 near by.

Thank you for your reply. My friend has got same TV with older version and my observation is the Brightness and 4K Videos is better than in latest versions.

 

[Gohamad]

Yes. It's possible.

Celesw.tcl.com/Test/software/V8-R851T02-LF1V187.rar

Why to downgrade? There's v322 near by.

Would you tell me how do I proceed with installing the software to the TV?

I downloaded the software file that has provided by you and I copied to USB flash drive after format FAT-32.

when I'm trying update local mode it shows error box, it says that No avaliable update file please insert USB device with software package.

I'm very sure that the USB is healthy and it's recognized by the TV.

Please help.

 

[coolek33]

If it's in update.img format:
Hold power button on remote and choose power off. Or power off normally and und unplug the TV from from power.
Next with flash drive plugged to usb power on TV by press and hold the physical button on TV (not remote) until the led light on TV starts to flash. And wait.
It can question about older firmware so you have to agree.

 

[Gohamad]

If it's in update.img format:
Hold power button on remote and choose power off. Or power off normally and und unplug the TV from from power.
Next with flash drive plugged to usb power on TV by press and hold the physical button on TV (not remote) until the led light on TV starts to flash. And wait.
It can question about older firmware so you have to agree.

Thank you for your reply. I did exactly what you advised. But still it didn't proceed with the installation. Please find video url it would explain the problem.

https://drive.google.com/file/d/1PHLNzio6p7ntoYMe4xaqSxfQHeMLquDB/view?usp=drivesdk

Please advise.

 

[Gohamad]

Thank you for your reply. I did exactly what you advised. But still it didn't proceed with the installation. Please find video url it would explain the problem.

https://drive.google.com/file/d/1PHLNzio6p7ntoYMe4xaqSxfQHeMLquDB/view?usp=drivesdk

Please advise.

It's done! Software file (update.img) it has to be directly in USB-flash drive without sub-folder.

I recommend to install this version V8-R851T02-LF1V187.008562 instated of the latest one because the Brightness and 4K Videos is better and more clearly.

Thanks all.

 

[Ashsoni]

Hi i recently buy tcl 55c8 model when i play any shows or movies it playback as smooth motion i have to disable it. I also trying to downgrade or update software and also try different picture settings like movie or judder reduction but still video play in smooth motion or with memc. If any one know how to disable it please let me know. and also audio and video are not in sync so please help me to sort out this problem.

 

[Ashsoni]

It's done! Software file (update.img) it has to be directly in USB-flash drive without sub-folder.

I recommend to install this version V8-R851T02-LF1V187.008562 instated of the latest one because the Brightness and 4K Videos is better and more clearly.

Thanks all.

Hi you have the firmware file for this TV. Please share if you have thanks.

 

[stasiof]

Hi you have the firmware file for this TV. Please share if you have thanks.

All versions discuss here is very OLD !.

Look for latest firmware (V727) in this thread.....

TCL Android TV model 55p8m / Android Recovery TCL/BeyondTV/BeyondTV

My TCL Android TV model 55p8m has stuck and can't press any key in remote. The screen gives options to - Try Again - Factory data reset, but do not know how to select one of this option and continue without a keyboard or remote connected to the...

forum.xda-developers.com

 

[Ashsoni]

@stasiof , thanks for reply this version will works for my TV? Model is tcl l55c8us.

 

[Ashsoni]

@stasiof, I am not able find zip file can you share me link please.

 

[stasiof]

I posted you thread where to look....post....#4,241

Edit:
V8-R851T02-LF1V727 OTA