Vestel 17MB170 10129490 firmware for Hitachi 55HAK5751 no image

Hello to all, I need help to solve a problem with a TV from a friend. The main board Vestel 17MB170 10129490 TV HITACHI 55HAK5751 it breaks down and he bought a second-hand one that has sound but no image; this mainboard is for a TV of 50" instead of 55". All steps indicate that we can update the correct code (firmware) to this mainboard and the TV will work.

Can anyone help me to get this firmware? I attach the pictures of the mainboard and TV model.



Many thanks in advance, Jose.
Can you write the full sticker/label details from the LCD panel and from both mainboards (original and second hand), not only 17MB170 / 10129490?
Original mainboard TV: HITACHI 55HAK5751. Código Vestel: 10129490. Mainboard: 17MB170. Chassis Vestel Android TV. Panel 55T32-C0L.
Second-hand mainboard TV: HITACHI 50Hxxxxxx. Mainboard: 17MB170.
Have you already tried any USB firmware update, and when the TV is on do you have backlight on the screen or is it completely dark with only sound?
No update tried.

main 17MB170, panel VES550QNDA-2D-N41, tcon AUO T550QVN05 7 ALCW
software link
it's for another brand (Turbox), but it works perfectly on your model

copy the file upgrade_no_tvcertificate.pkg on an empty usb stick
insert the usb stick in the tv
then plug the power cord: the recovery will start automatically

Many thanks for your quick response, I will try to install the Sunday and answer you with the result.

Added after 4 [hours] 47 [minutes]:

Hello billobirillo, many thanks, we can install the code today and the results it's not OK. we installed the firmware following instructions and after 20 minutes we get sound, panel black/blue, blacklight works fine.
After this installation we can check that the second hand mainboard works fine but we need the correct firmware to power up this TV.
We think that this code is similar but we need firmware with exact pannel 17MB170 + 55" + VES550QNDS-2D-N41.

write the code and post a photo of the tcon module (if it's present)
and the code and a photo of the panel driver

Hi, This is the information

the file I sent you is properly for that tcon module
if it doesn't work, maybe the 50 inch mainboard can't fit the 55 inch one
check if there are any component differences in this area

You wrote that your TV has a 17MB170 and panel VES550QNDS-2D-N41. If this software doesn't work either, you have a hardware problem.
Hitachi 55HAK5750 main 17MB170 panel VES550QNDS-2D-N41
https://files.fm/u/pba38yu6m

Many thanks for your answer and code. I will try to install it tomorrow and answer you with the results.

Added after 9 [hours] 9 [minutes]:

hello yokoono51, we installed the code now and the TV is working fine. Many thank for your support.