LG MAX220UB, Service Manual

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1-7
FIRMWARE UPGRADE METHOD
[ MAIN AND CD FIRMWARE UPGRADE ]
1. Con fi rmation of version information
• Change the Source of audio set to tuner. (Default: tuner)
• Turn power off using power key.
•
Press power key for 5 s. (After power on, continue pressing)
• After 5 s, beep sound rings two times.
Then version information would show up at display.
• In order to check version of MAIN and CD system, Press band key.
2. Upgrade Program reading
• Insert update USB in ACC on state and then is displayed in order.
USB : [USB Check
→
MN(CD) DNLD?]
3. Upgrade start
• In order to start upgrade, Press Play/Pause Key until “CHECKING” Display on the LCD.
4. Upgrade progress display
• Upgrade is in progress now.
CD Download : [CHECKING
→
ERASE
→
WRITE
→
I-VRF
→
D-VRF]
MN Download : [CHECKING
→
WRITE
→
DOWN OK]
5. Upgrade Completion
• When Upgrade fi nished, the display shows up “DOWN OK”. After a while, the audio set is
reset automatically.
• Caution!
If power is off on the way of upgrading fi rmware, the set can’t be recovered.
Therefore pay lots of attention for power not to be off.