LG 15LS1R Service Manual page 13

# If you can't use service remocon or enter ISP mode, please follow the method.
(The method uses manual WISP program)
1. Change from WISP Automatic mode on to manual mode and then push Enter ISP Mode.
2. As soon as turn on AC power, push Send quickly and again. Check the following message in ISP status.
*If ISP status is not ready, try again from AC power on.
3. After Entering ISP mode, Push Erase Flash and Send. (Take turns (1)~(4) ).
*If Erase Flash is not OK, try again Erase Flash.
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