LG 28LM4 0B-PU Series Service Manual page 9

1. USB Upgrade
Check software upgrade bin file name as below.Only bin file name is the same as TV set,USB upgrade
can be success.
Region
Nafta
Need do AC on upgrade as below steps.
1. Copy the software Bin to the USB root.
2. Insert the USB to the mainboard USB port.
3. Then AC on.
4. Then the TV will upgrade, and need to reboot after upgrade success.
Upgrading:
LED indicator blinking red 1000ms green 1000ms alternate, TV will turn to upgrade succeed or failed
status after finish upgrading.
Upgrade succeed:
LED indicator blinking red 250ms green 250ms alternate.
Upgrade failed:
LED indicator blinking red 1750ms green 250ms alternate.
Pull out USB and power on TV after upgrading finish.
Model Software Name(FY2019)
28 LM_NAF_3553.bin
- 9 -
2019