HT805TH
*This is how I changed mine, hope it works for you.
*With no disk press PAUSE + 1472
*2. In my LG I got this EEPROM information EEPROM: f1 00 d1 20 00 80 80 10 b5 00
*3. I changed the value 20 to 00 (0 means all regions)
*4.Turn off the DVD and wait a little before turn it on again
Then to check if code works
*1. Press the Setup button on your remote control
*2. Select TV Aspect and place the cursor on the 16:9 Wide option
*3. Using your remote control enter the code 1, 3, 9, 7, 1, 3 and 9
*4. Press the Enter button on your remote control
*5. You should now see the version information screen stating Region 0, or your region code if the change failed.
*6. Press Setup button on your remote .
Still not working try changing
*F1 to 00 and 20 to 00