Originally Posted by Georgie3
Congratulations... good going! I had never heard reports of the serial port procedure being tried (successfully or not), so I'm honestly almost shocked it worked. For those brave enough coming after you to kill their TV then put it right, you've done the web a valuable service.
There have been many, many reports of people bricking their TVs with the firmware hack, so much that another forum site avforums.com shut down all LG TV firmware threads. If there are any special notes you can add that would be great, did it work with HyperTerminal "out of the box", or were any funny option settings needed beyond what the tester13a procedure says?
I'll try and make it as easy as possible to understand. Please bear in mind these settings are for the "HyperTerminal" software I used.
1...Install "HyperTerminal", get the private edition, 30 day free trial.
2...Start HyperTerminal and click file ~ new connection. Name the new connection anything you want and click OK.
3...In the "connect to" box that pops up, enter your country/region and area code and what com port you are using, usually com port 1.
Leave everything else as is.
The click on the "configure button" and another box will pop up, "com 1 properties", with the settings for your new connection.
Set as follows:-
Bits per second = 115200
Data bits = 8
Parity = 0
Stop bits = 1
Flow control = Hardware
Click on apply, then ok to close the com 1 properties box, then click ok again to close the "connect to" box. Your settings are now saved and you should be back to the main screen which is a big blank white box, and you are ready to go!
Now, you have to fire up your TV. Switch on TV and hit the escape button on your keyboard at the same time. If all goes to plan you should see the mstar# prompt. This means the TV is alive and is connected to your PC.
Now type in the swuz command, and set of numbers and letters will show, don't worry about these, they are for info only. You are now ready to send the epk firmware file to your TV.
Now hit the transfer button at the top, and select "send file" and a small box will pop up. Browse to your firmware file and click so it shows in the text box, but do not hit the send button yet.
In the protocol pull-down menu, select "Z modem with crash recovery".
Now you can hit the send button and the file should start to transfer to the TV.
It took me 35 minutes to transfer the file over, so its not quick! So go make a cup of tea/have a bath/go out/whatever. I would advise doing nothing with your PC as the file is being transferred, it may botch the transfer, I dunno for sure, but just to be safe, leave the PC alone.
That is the way I brought my bricked TV back from the dead
P.S. As Georgie 3 pointed out, you need a proper null modem cable so all serial ports are connected, not a cheapo one!
I used a Blekin 9 pin serial cable from Maplins UK, and it cost £10.99, which is quite expensive considering you can get them for £3/4 elsewhere, but I wanted the best cable I could find to do a proper job.