I'm trying to gather info on North American LG firmware versions, and ideally get some firmware files themselves (.epk). Here's what I've managed to figure out so far about various versions:
4.05.00 - My set has this version. Easy to enter service menus. Has various problems playing USB video but handles MPEG2 .ts well, including 1080p.
4.22.00 - Can still access service menus.
4.30.01 - Has lip sync issue fix. No easy access to service menus (need service remote or remote code hack). May have Dolby audio pass through issue? Confirmed to have same problems as older verions when playing MPEG4 USB video (menu corruption & spontaneous reboot after playing .avi, .mkv). MPEG2 video probably still ok.
4.54.01 - Possibly the latest version (as of Jan 2010) May have further improvements for lip sync problem. No easy access to service menus.
I know of no posted copies of LG North American firmware (except 4.30.01, see update below). European firmware (3.xx) is available but can't be used, *will brick your set* if it's a North American model.
GUpdate: BB_Mike was nice enough to send me the LG V4.30.01 North American firmware. Download link and instructions/warnings follow.
The following firmware link is for North American LG LCD TVs with model number xxLH40 or xxLH41. The "LH" indicates the TV was made in the 2009 model year. Please read all warnings which follow.http://rapidshare.com/files/33197829...flash.epk.html
You must have a North American TV model, preferably with a current software version that starts with "4", for example 4.05.00. This firmware will not
work on non-North-American TVs.
This firmware contains a fix for the widely discussed lip sync problem which affects earlier firmware versions. After you load this firmware you will not be able to access service menus using the OK+OK or MENU+MENU remote & TV button combinations. Remote control code hacks available elsewhere on the web will work to enter service menus after the upgrade.Firmware upgrade instructions:
Here is a link for the Technician Training Manual for 42LH40. See pg 16 for USB software upgrade instructions. http://22.214.171.124/contents/Displa...esentation.pdf
Search other manuals on the same site if your set is a different model:http://126.96.36.199/SubPages/Directview_LCD.htmDisclaimers:
I have not tried to load this firmware (I'm waiting to obtain an earlier version such as 4.05 so I can downgrade again if needed). Others have loaded it successfully. I am not responsible for any damage you may cause to your TV. Even if you do everything right, your TV may be rendered inoperable (bricked) by a flash memory fault, power failure during upgrade, or some other problem. If your TV already has firmware version 4.30.01 or a higher number you are strongly advised not to load this firmware file.
I am interested to hear results of using this firmware version, in particular on sets where USB movie playback was previously enabled on an older firmware version (does the setting stick?)