LG 28LJ400B Service Manual page 9

About the LED flash during software upgrade:
Upgrading:
Red 1000ms Green 1000ms alternates,the TV set will turn to Upgrade succeed or Upgrade Failed status after the upgrading
process.
Upgrade succeed:
Red 250ms Green 250ms alternates, flashing before power off.
Upgrade Failed:
Red 1750ms Green 250ms alternates，flashing before power off.
4. TV set will reboot after update success.
2. AC ON
In order to avoid the software which is on the mainboard can not work normal for current panel,you can upgrade the
correct software through AC ON:
1. Copy the Software Bin to the U-Disk root;
2. Insert the U-Disk to the mainboard USB Port;
3. The AC on,
4. Then the TV will upgrade, and need to reboot after upgrade success.
Upgrading:
Red 1000ms Green 1000ms alternates,the TV set will turn to Upgrade succeed or Upgrade Failed status after the
upgrading process.
Upgrade succeed:
The TV will prompt to restart immediately.After restart, The TV will prompt From what version of the TV will be
prompted to upgrade to what version.
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