Here is LG Optimus Chic V10C updated firmware download link and info on how to flash into Optimus Chic. Always remember your old firmware details, so that you can revert it back once encountered some issues when flashing.
LG Optimus Chic E720 V10C firmware Download:
Caution: Please flash the phone carefully and follow flashing or upgrade procedures / tutorial, and of course do it with your own risk.
Tutorial to flash an LG Optimus Chic:
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