My 18 month old LG G3 beat stopped working suddenly. Turned it off one night then on restarting it would not find a network. Sent it to LG for warranty repair and was told it had lost its IMEI info and was not warranty so their agents Evertec want to charge me $220 to reflash the phone which only cost $250 brand new. I am at a loss to know why this is not covered as it seems to be somewhat of a problem with these phones. My question is can I do the repair myself using my pc and whatever software is needed and how is it done ? Thanks