TH-49LF8U, TH-49LF8W (serv.man2) - Panasonic TV Service Manual (repair manual). Page 46

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1. Computer : Used for firmware transforming

2.  Communication cable : D-sub 9pin (female/female RS-232C straight)

3. Software & updating file : SerialLoader & firmware (LF8_80-LFV6_60_SUB_Vxxxx.ldr), 

                                              download from service web site.

4. Extract the software and file package to your favorite directory on your computer. 

5.  Connect the serial terminal (SERIAL-IN) and PC with an RS-232C cable.

Caution: Before performing the updating, the serial cable on the SERIAL OUT terminal must be disconnected
               when using the  "Serial daisy chain" function.  (If did, the display will not turn on again.)  

1. Start up the updating software [SerialLoader.exe].

2.  Choose available COM port with pull down menu and click [OK]. The baudrate should be used with "115200".

3.  On the left window, browse and select a folder where the updating file is stored. The firmware file is listed on the right win-

dow and select it then click [Add]. The selected firmware will listed on the bottom window.

4. Click [OK]. The another confirmation window will appear and then click [OK] to start updating.

5. After finishing the updating, the window below appear and click [OK] to close the software.

6.  Turn the display off and leave for more than 1 minute and then turn on again.Enter the ser-

vice mode [CD Mode] and confirm that the version has been updated.

*   During updating, Do not disconnect 

the AC cord or serial cable otherwise 

the Display may not turn on 

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