EAX66085703 LG 40UB800v TV Emmc firmware.

Download EAX66085703 LG 40UB800v TV backup Emmc firmware.

LG 40UB800V TV Repair Firmware Download and eMMC Programming Using RT809H

Download LG 40UB800V repair firmware. Learn how to reprogram eMMC THGBMAG5A1JBAIR on EAX66085703 board using the RT809H programmer.

If your LG 40UB800V TV has stopped working or is stuck in a boot loop, the issue may lie in its eMMC memory. The good news? You can restore the TV to working condition by downloading the correct repair firmware and reprogramming the eMMC chip using the RT809H programmer. In this guide, we’ll walk you through the TV’s specifications, where to get the firmware, and how to perform the repair safely and effectively.

LG 40UB800V – Technical Specifications

Before downloading firmware or attempting any repair, it's important to understand the key components of the LG 40UB800V television. Below is a table outlining the essential characteristics:

• TV Model:   LG 40UB800V

• Main Board:   EAX66085703 (1.0)

• Display Panel:   V400DK1-KE1

• Memory Type:   eMMC NAND Flash

• eMMC Chip:   THGBMAG5A1JBAIR (Toshiba)

• Resolution:   3840 x 2160 (4K UHD)

• T-Con:   Integrated on Main Board

• File size:             1.1GB 

• Counted:             rt809h 

Common Issues in LG 40UB800V TVs

Many users report their LG 40UB800V TVs suddenly failing to power on, displaying a black screen, or becoming stuck in the logo loop. These issues are commonly caused by corruption or failure of the eMMC memory chip. When the firmware stored on the eMMC becomes unreadable or damaged, the TV is unable to boot properly.

Why Reprogram the eMMC?

The eMMC chip (THGBMAG5A1JBAIR) is a non-removable flash memory that holds the TV’s operating system and essential firmware. When corrupted, it can be restored by rewriting its data using a suitable programmer like the RT809H. This process revives the television without needing a new motherboard.

Required Tools and Firmware Files

To perform a successful repair, you will need the following:

• RT809H programmer

• eMMC socket adapter compatible with THGBMAG5A1JBAIR

• Firmware dump (BIN file) specific to LG 40UB800V with EAX66085703 main board

• RT809H software installed on your PC

• Soldering tools (optional, for hard-wired connections)

Note: Always ensure the firmware file matches the exact main board version and panel type of your TV to avoid incompatibility.

Download LG 40UB800V Repair Firmware

The firmware file used to reprogram the eMMC should include the correct bootloader, Android system (if applicable), and configuration for the specific panel (V400DK1-KE1). This ensures proper display and function post-repair.

You can typically find this file in technical forums, firmware repositories, or through specialist repair websites. Ensure you download from a trusted source to avoid corrupted files.

How to Program the eMMC Using RT809H

Here is a step-by-step guide for using the RT809H to restore your TV:

1. Remove the Main Board

Carefully disassemble the TV and detach the main board (EAX66085703). Locate the eMMC chip marked THGBMAG5A1JBAIR.

2. Connect the Chip

Use an eMMC socket adapter or solder fine wires directly to the chip's data, power, and ground lines if socketing is not possible.

3. Load the Firmware

Launch the RT809H software and load the .BIN firmware file you previously downloaded.

4. Write the Firmware

Initiate the programming process. The software will erase the existing data and write the new firmware to the chip.

5. Reassemble and Test

Once writing is complete, reinstall the board into the TV and power it on. If successful, the TV should boot normally with restored functionality.

Troubleshooting Tips

• TV still not powering on? Double-check your connections and verify the firmware file was correct for your board.

• Blank screen after flashing? Check panel compatibility and firmware resolution settings.

• RT809H not detecting the eMMC? Ensure proper pin contact and voltage settings.

Final Thoughts

Reprogramming the eMMC memory on your LG 40UB800V TV can be a cost-effective way to bring a non-functional unit back to life. Using the RT809H programmer, you can restore the TV’s operating system and save on expensive board replacements. Just be sure to download the correct firmware file matching your TV’s exact specifications to ensure a smooth recovery.