Insignia LCD Television LTA550HJ05 - JK - ROH – How to enter service mode, adjustments, how to update the software

To enter the Factory OSD Menu

First in the “Factory Option” item “Mode” choose “M” or “U”, default is “U”.
M-Can enter factory mode with factory RC or user RC.
U-Can enter factory mode only with user’s RC.
Note: Mode “M” is only used for factory production.

With factory RC (remote control)
1. Press “M” button and enter factory mode.
2. Press “Menu” button and enter factory OSD menu.
3. Press “CH+”/“CH-” button select the function menu, press “VOL+”/“VOL-” enter the selected function menu. Press “VOL+”/“VOL-” button adjust values in the menu.
4. Press “M” button exit factory mode in the factory OSD menu.
When TV outgoing factory, user cannot enter factory OSD menu with Factory Remote.

With user’s RC
1. Power TV On
2. Press Menu button and call up User OSD Menu
3. If enter 1>9>9 >9 in sequence. Note: If necessary, re-do number keys. Factory OSD appears.
4. If enter 1>9>7 >7 in sequence.ˈ BBY Service Factory OSD appears.
5. Press the standby button then AC turn off and restart the TV, which can exit factory OSD menu.

White Balance

Different source has different WB values.

Before adjusting, please change to desired source.

Auto Color
For VGA and Component Video sources, WB values must be adjusted.
Before adjusting, prepare the signal instruments such as DVD or K-8256 first, and find the video picture with full colour bars. Then change to desired source.

Press M button and enter factory mode.

Press Menu button and enter factory OSD menu,

Select the item Auto Color.

Press Vol+ button to auto colour.

Close the OSD menu after 5 seconds.

Note:  mode M is only used for factory production.

Note: The factory menu date varies according to different sources. In case changing the factory data by error, you can choose to “Clean Protected”, by which you can resume the default value.
To clear the EEPROM

Select the item Clean All.

Press the Vol+ button to clear the EEPROM data.

Close the OSD menu after 5 seconds.

Restart the TV.

Video Mode: NS-55E560A11

Video Curve and Volume Curve: NS-55E560

How to exit the Aging mode

If there is a red “M” moving on the screen, it means the TV is in Aging mode. 

To exit the Aging mode, use your user RC, and enter 8-0-8-7 in sequence.

Software Upgrading

1. Before upgradingˈ Write down the ADC Calibration values of the channel of VGA and component.
2 Upgrade the software.
3 To clear the EEPROM .
A Select the item “Clean Unprotected”.
B Press VOL+ button to clear the EEPROM data.
C Close the OSD menu after 5 seconds.
D Restart the TV.
4 Write the ADC Calibration values copied just now into the channels of VGA and component.
5 After operation above all, necessarily, Renew search the channels for the customer.

USB direct Software Upgrading

The software is upgraded by a burning toll-MtkTool, which can burn the program file *.bin to the main board of the unit.
The software can be upgraded by USB Disk.
First, copy the *.pkg file to USB Disk;
Second, rename the pkg file name to LTDN55T28GUS.pkg NS-55E560A11 .
Power on the TV, and insert USB Disk to USB port.
The TV will identify the software and upgrade automatically. Follow the instructions and do it.

Get ready for upgrading:  Install the driver

Double click the icon [PL2302 driver installer.exe] to install the driver

Select the default value, the driver will be installed step by step.

Hardware connecting
Connect the unit to your PC with a USB-to-serial port cable. USB port connects to your pc, and serial port to the TV’s VGA port.

For the first connecting, the PC will recognise and automatically install the USB device. The process is just like the installation of a mini disk.

Upgrading with the MtkTool

MTKtool is a green program needing no installation. It is saved in the folder

The MtkTool using log is restored in the MtkLog folder. It records the running time and date whenever the tool is used. The log will be a txt file named by the date and time.

After connecting the TV with your PC, double click icon, open the MtkTool.

If following error appears, it means the related port is not be set properly.

Ignore these errors, click “Confirm” and enter the Flash Type interface:

select “NOR”,click “OK” and enter the MtkTool main interface, see the following picture.
Flash chip model
 follow these steps to update the software.
1 Select mode of Flash chip to MT5387 as the below picture.
2 Refer to the instruction to select the communicate port.
3 Press the icon beside the baud rate and make sure it is green as the below picture.
4 Set the flash baud rate to 115200 as the below picture.
5 Click the browse button to select the *.bin file that will be updated.
6 Click the “start” button to update software.

Open the “Device Manager” and find which port is connected with the TV. In above picture, COM4 is connected to the TV; so, select “COM4” in the MtkTool main interface. 

Select the right baud rate according to chip model. For this unit( chip model is MT5387), select 115200.

Note: Where or not click the “Auto Set Flash Baud Rate” in the “window” menu depends on the chip type. If the flash chip does not support high speed transport, do not select this option; otherwise, reserve the selected mode.

Click “Browse” button, find the upgrading program file, and select it. Press “Upgrade” button and start upgrading.
The following interface appears on the screen, indicating upgrading successfully.

Be very careful when proceed each step. 

Be sure not to power off the AC mains to the set,  until firmware update has done successfully. Otherwise,  irrecoverable damage may occur to the set. 

Use a UPS during firmware update will be the best and recommended.