LG 20LS1R-ZG Service Manual page 15

3. Push "Select Intel HEX File" and select hex file.(1)
4. Push "Erase" => "Program" => "Verify" => "Restart System" after loading file.
(Take turns (2)~(5) ).
5. Check whether each stage (2)~(5) is successful in message box.
6. After finishing ISP, turn OFF Main Power AC switch and then turn ON the switch.
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