JVC LT-55VAQ6235 - Vestel 17MB185 / 180721R2 - panel VES550QNZL-M1-Z01

Hi everyone,

I am looking for a Panel Profile (.bin file) or a complete Firmware for my JVC TV. I have replaced the mainboard, but I am experiencing a mirror image and a "barcode" effect (solarization/incorrect color depth and signal mapping). This indicates a mismatch between the mainboard output and the panel's expected data format.

TV/Hardware Specifications:

• Model: JVC LT-55VAQ6235
• Mainboard Type: Vestel 17MB185 / 180721R2
• Mainboard Serial: 10138148 2224_ (1906 2382363685 289169140184)
• T-CON Module: 6871L-6393B / 6870C-0805A / V19_UHD_TM120 V0.3
• Panel Name: 55_VESQNZHZ02F_M1UHD_D_F4_J185_V4718
• Panel Sticker Type: VES550QNZL-M1-Z01

Troubleshooting performed:I have already tried a factory reset via the Service Menu, but the issue persists. I need the specific panel profile to correct the LVDS/V-by-One mapping.

Could anyone provide the necessary files or point me to a reliable source?

Thank you in advance for your help!



Děkuji všem za pomoc.

1. I don't think there's a way to save the panel profile from 17MB185
2. If you know how to do it, please tell us.
3. The motherboard was for the VES550QNZH-M1-Z02 panel
4. I only have this in the archive
17MB185 panel VES550QNZL-P2-Z01 Toshiba

Thank you for your answare.
You have right. Not exist simple official way to extract/edit PQ profile...

I find some info on ChatGPT about it:

PQ files (picture quality tables/tunings) are usually inside the firmware bundle or stored on the eMMC flash, not exposed as standalone editable files by default. There’s no official tool from JVC/Vestel to extract them.

If you absolutely want to extract and edit PQ data, here’s what professionals typically do — but be aware this requires tools and risks:

---

1. Read the eMMC flash
The TV’s firmware (including PQ data) is stored on the eMMC chip on the mainboard.

Method A — ISP programming

• Use an SPI/eMMC programmer (e.g., XGecu T56 / TNM5000 / RT809H) and connect to the board’s eMMC pads.
• Dump the entire eMMC contents to a binary file (.bin).

Method B — In-system boot extraction

• On some Android Vestel boards, if USB recovery mode still works, you might be able to get a firmware package from a USB update image — but those rarely include raw PQ tables.

Note: Without exact eMMC pinout diagrams and solid hardware skills, ISP extraction can damage the board.

2. Locate the PQ region inside the dump​

After dumping the eMMC:

• PQ data (picture tuning tables) is typically stored either:
  • In a dedicated partition inside the Android filesystem (often /system/pq/ or similar)
  • Or as part of a vendor binary blob
• You’d need to:
  1. Mount/extract partitions from the full eMMC dump.
     • Tools like binwalk, dd, and Linux can help split partitions.
  2. Search for known PQ magic headers (depends on vendor format).
  3. Extract what looks like PQ tables into a separate file.

This step is not standardized — firmware structures vary widely, and Vestel Android boards don’t have documented PQ formats. There’s no one universal header.

---

3. Edit in a Hex Editor​

Once you have a suspected PQ block:

• Use a hex editor (HxD, 010 Editor, etc.).
• Important: You must understand the structure — random edits can:
  • Corrupt tuning tables
  • Break display timing
  • Completely lock the TV

Without a reference or documentation for the specific PQ format, editing is blind guesswork.

---

4. Repack and flash back​

After editing:

• Repack the partition back into the eMMC image.
• Re-write the entire eMMC to the board via programmer

There is no official way to do this via USB with PQ alone for 17MB185 Android boards — the normal USB update process expects a full firmware image.

---

=========================================


I have not eMMC programmer, for extract firmware image...
So i try write request to official JVC support to send me Core Recovery package (MstarUpgrade.bin), but i don't thing they send me anything...

But thank you to your time to answare.

Artificial intelligence knows a lot, but practical implementation is difficult. It's not worth it.
I only have this in the archive.
Full software.
17MB185 panel VES550QNZL-P2-Z01 Toshiba
Tell me if you want to try.

yokoono' Alıntı:

Artificial intelligence knows a lot, but practical implementation is difficult. It's not worth it.
I only have this in the archive.
Full software.
17MB185 panel VES550QNZL-P2-Z01 Toshiba
Tell me if you want to try.

Genişletmek için tıkla ...

Hi,
if you can... u can send me a link for "research" purpses...
I now Ai is not good for "this problem", but sometimes have good "source" for my question...

Like this:
The main differences between the
VES550QNZL-M1-Z01 and VES550QNZL-P2-Z01 panels lie in their mechanical revisions and specific hardware configurations within the Vestel ecosystem. While both are 55" 4K QLED panels, they are not always directly interchangeable without adjustments.

Comparison Table


Key Differences Detailed

1. Mechanical Design (Chassis):
   • The M1 version (used in your JVC) is designed for the specific bezel and mounting points of that series.
   • The P2 version is a later revision often found in Toshiba models. While the screen size is the same, the frame thickness or the screw-hole alignment for the internal metal chassis might differ slightly.
2. Panel Profile & Firmware:
   • Even though both work with the 17MB185 mainboard, the software (firmware) contains a "Panel Profile." The P2 panel might have a slightly different gamma curve or color initialization. If you swap an M1 with a P2, you might get an upside-down image, distorted colors, or no backlight until the correct panel profile is uploaded via USB.
3. Backlight Connectivity:
   • While they use the same LED strips, the cable routing from the power supply (17IPS72) to the panel's LEDs sometimes differs in length or connector position between the M1 and P2 revisions.

Verdict for your JVC LT-55VAQ6235
If you are looking for a replacement for your JVC, it is highly recommended to stick with the M1 version. Using the P2 version is technically possible because the LVDS/V-by-One signals are compatible, but you should be prepared for potential mechanical modifications and the need to update the panel software in the TV's service menu to ensure correct color reproduction.

Full software;

yokoono' Alıntı:

Full software;

Ziyaretçiler için gizlenmiş link,görmek için Giriş yap veya üye ol.

Genişletmek için tıkla ...

If JVC support does not provide the recovery firmware package with the correct PQ profile for my specific panel, I will try using your file, even though I am aware of the risks, such as bricking the mainboard, encountering a different gamma curve, or issues with color initialization etc.. I am also considering purchasing an eMMC programmer to perform a 'dump' of the original board to back up the native profile. We’ll see... I want to explore all options.

Anyway, thank you for your time. I appreciate any help in solving my problem. Thank you, and I wish you all the best!

Success.