JVC LT-55N7125 EL.MT9602PRO-FG95 - bootloop, USB firmware for ST5501A panel

AvbFiber wrote:

Need USB firmware
EL.MT9602PRO-
FG95
ST55 @ElektrodaBot
What is the TV brand and full model number?
JVC LT-55N7125
Please provide panel model and photo/text from mainboard sticker, e.g. firm...

Initial assessment of available information

For your set the identification is:

Item	Data
TV brand / model	JVC LT-55N7125
Mainboard	EL.MT9602PRO-FG95
Required panel variant	ST5501A
Required USB recovery filename	upgrade_image_no_tvcertificate.pkg
Fault	Bootloop on JVC/logo, local keys not working

Your request is technically valid, but the important point is: the firmware must match the ST5501A panel variant and the exact board/software sticker version. “ST55” alone is not enough for a safe match.

Direct answer

I cannot confirm a publicly available, verified JVC LT-55N7125 / EL.MT9602PRO-FG95 / ST5501A USB package from official JVC sources. Current JVC TV support information states that downloadable TV firmware files are not provided to end users; TV firmware updates are normally OTA only. (esi-support.zendesk.com)

Therefore, do not flash a random

EL.MT9602PRO-FG95

package unless it is explicitly confirmed for:

- JVC LT-55N7125
- EL.MT9602PRO-FG95
- ST5501A panel
- same or compatible board sticker/software version

A wrong package may boot the TV but give black screen, inverted image, wrong colours, no backlight, wrong V-by-One/LVDS mapping, or may require full eMMC reprogramming.

What is still needed before a safe firmware match

Please provide the exact text or clear photo from:

1. Mainboard sticker
- Any line containing

SW

,

VER

,

DATE

,

FG95

,

MT9602

, barcode, production code.
2. Panel label
- Not only

ST55

, but the full panel code, for example:
-

ST5501A...

-

ST5501A04

-

ST5501Axx

- or equivalent manufacturer code.
3. Any second small sticker on the board
- Many EL/MTK boards have a separate sticker with the factory firmware build or panel configuration.

Without this, the request remains ambiguous even if the mainboard number is correct.

Practical USB recovery procedure, once the correct file is obtained

Use only the verified ST5501A package.

1. Use a small USB stick, preferably USB 2.0, 4–16 GB.
2. Format as:
- FAT32
- MBR
- single partition
3. Copy only this file to the root directory:



4. Disconnect TV from AC power.
5. Insert USB stick into the main USB/service port.
6. Press and hold the TV local Power key. If no reaction, later also try VOL- or VOL+ depending on key board behaviour.
7. While holding the key, connect AC power.
8. Keep holding for about 10–20 seconds.
9. If the bootloader accepts the package, LED blinking or an update screen/progress bar should appear.
10. Do not interrupt power during update.

If the USB update does not start

If the TV ignores the USB file, possible causes are:

- wrong firmware package,
- wrong file name,
- USB stick not detected by bootloader,
- damaged bootloader,
- corrupted or failing eMMC,
- package signature/certificate mismatch.

If the update appears to complete but the TV returns to the same logo bootloop, suspect eMMC failure. On these Android/Google TV boards this is common. In that case a USB package will not solve the problem; the repair requires:

- reading/replacing the eMMC,
- programming a full dump from a compatible donor board,
- preserving/calibrating panel data, MAC/Wi-Fi data, certificates where possible.

Important correction

This is an MT9602/MediaTek-type Android/Google TV platform, so avoid mixing it with unrelated Vestel, MStar or generic JVC firmware. JVC support pages may list firmware for other JVC product categories such as projectors, car audio or cameras, but that does not mean a valid USB TV firmware exists for this chassis. (support.jvc.com)

Recommended next step

Post the following here:



With the full mainboard sticker and full panel label, it will be possible to check whether another member has the exact ST5501A USB recovery package or whether you need a full eMMC dump instead.