Where to download JVC LT-43N585 USB recovery firmware for 17MB170/17MB185 bootloop?

SingleVolt wrote:

Hello, please help.
I need USB recovery firmware for JVC LT-43N585
Mainboard: 17MB170 / 17MB185
Problem: Stuck on SMART TV logo - bootloop
Thank you
https://obrazki.elektroda.pl/8...

Initial assessment of available information

The rear label photo confirms only:

- Brand/model: JVC LT-43N585
- Serial shown: likely

040599-101570

- Production/batch code:

102021H

- Made in China
- Power: up to 85 W

It does not confirm the mainboard type. The mainboard must be read from the PCB inside the TV, not from the rear model label.

Direct answer to your question

Yes — 17MB170 and 17MB185 firmware files are different and must not be treated as the same.

If the files I mentioned/sent are for different models or different chassis, do not flash them until we confirm the exact board and panel. A wrong firmware can cause:

- permanent boot failure,
- black screen,
- wrong colors,
- inverted/double image,
- no remote control response,
- lost keys/certificates,
- corrupted eMMC.

For Vestel boards, firmware selection is not only “17MB170” or “17MB185”; it also depends on the TV model, board revision, panel type and software branch. The MB170 service documentation uses USB files such as

MstarUpgrade.bin

,

upgrade_loader.pkg

, or

upgrade_loader_no_tvcertificate.pkg

, and the MB185 documentation shows a similar but chassis-specific update procedure. (brelect.fr)

Detailed problem analysis

1. Your TV may not actually be 17MB170/17MB185

The label says JVC LT-43N585 Made in China. Some information available for the N585 family points to Chinese universal-type boards such as TP.SK535.PB801 (N), not necessarily Vestel 17MB170/17MB185. One public replacement-board document associates the N585 family with TP.SK535.PB801 (N) and shows software information for JVC LT-43N585. (manuals.plus)

So the first important correction is:

> Do not assume it is 17MB170 or 17MB185 from the TV model alone. Open the TV and read the PCB marking.

The mainboard may be one of these:

Possible board marking	Meaning	Firmware type
17MB170 , 17MB170-1 , 17MB170-2	Vestel Android chassis	Vestel MB170 firmware only
17MB185 , 17MB185Y	Vestel Android chassis	Vestel MB185 firmware only
TP.SK535.PB801 , TP.SK535.PB801 (N)	Chinese/CVTE-type board	Completely different firmware
TP.SK518D.PB802	Chinese universal/OEM board	Completely different firmware

If the board is TP.SK535 or TP.SK518, then 17MB170/17MB185 files are wrong.

2. Why different model firmware can be dangerous

Even when the mainboard number is the same, TV firmware normally contains:

- bootloader or loader files,
- Android/Linux system image,
- panel timing data,
- LVDS/V-by-One configuration,
- backlight control parameters,
- remote-control table,
- tuner/region settings,
- HDCP/Netflix/Widevine or TV certificates,
- factory settings and picture-quality data.

That is why firmware for a similar 43-inch JVC, Toshiba, Hitachi or Telefunken may boot but still give a bad picture or another fault. Elektroda repair references for Vestel 17MB170/17MB185 also emphasize that the firmware must match the board and LCD panel, not just the chassis name. (elektroda.com)

3. 17MB170 vs 17MB185

They are both Vestel smart-TV platform families, but they are not interchangeable.

Use this rule:

- If PCB says 17MB170 → use only firmware prepared for 17MB170 + your TV model + your panel.
- If PCB says 17MB185 → use only firmware prepared for 17MB185 + your TV model + your panel.
- If PCB says TP.SK535 / TP.SK518 → do not use Vestel firmware at all.

Practical guidelines

Before flashing anything, please provide these photos/details:

1. Clear photo of the mainboard
Especially the text printed on the PCB, for example

17MB170

,

17MB185

,

TP.SK535.PB801

.

2. Photo of the white sticker on the mainboard
Vestel boards often have a service part number or software code.

3. Photo of the LCD panel sticker
It may look like

VES430...

,

C430...

,

LC430...

,

HV430...

, etc.

4. List of files inside the firmware package
Example names:
-

upgrade_loader.pkg

-

upgrade_loader_no_tvcertificate.pkg

-

MstarUpgrade.bin

-

allupgrade_....img

-

install.img

5. Confirm the symptom:
- stuck on SMART TV logo,
- reboots by itself,
- standby LED blinking,
- does USB LED flash when inserted?

Safe USB recovery approach — only after board confirmation

For a confirmed Vestel 17MB170/17MB185, the service manuals describe FAT32 USB update methods using files such as

MstarUpgrade.bin

,

upgrade_loader.pkg

, or

upgrade_loader_no_tvcertificate.pkg

. The file must be placed in the root of the USB stick. (brelect.fr)

General precautions:

- Use a small USB stick, preferably 4–16 GB USB 2.0.
- Format as FAT32.
- Put only the firmware file/files in the root directory.
- Do not rename files unless the instruction specifically says so.
- Do not remove power during flashing.
- If possible, make an eMMC backup before experiments.

For a confirmed TP.SK535 / TP.SK518 board, the firmware format and forced-upgrade procedure are different, usually image-based, and Vestel files must not be used.

Brief summary

Your rear label confirms JVC LT-43N585, but not the mainboard.
Yes, files for different models/chassis are different. 17MB170 and 17MB185 firmware must not be mixed. Also, your LT-43N585 may use a Chinese TP.SK-type board, in which case Vestel firmware is completely unsuitable.

Please upload a clear photo of the mainboard PCB marking and the LCD panel sticker. Then I can tell you which firmware family is correct and whether the files you have are safe to try.