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If your programmer that had the function of update online lost its program, you can resume it 1 Open the cover.2 Find JP1(J1), short circuit. Connect with PC and wait for communication is OK while the LINK LED is bright. Then take out short circuit on JP1(J1). 3 Enter WELLON’s system, it will auto-update. When update is OK, exit system. 4 Take out USB connecting cable, assemble it, enter WELLON again.
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