I tried this app and in the driver portion of it I selected ATT but there is no E980 driver shown in the menu. I suppose because I already have the driver installed? Either way, this doesn't work for me. It just keeps telling me I have the latest software and when I try to do the upgrade repair it tells me there is nothing to upgrade/fix. I was going to use this app to go back to pure stock because I am now getting the "your phone is not registered yet" error. From browsing the forums I came across one that said you get this error when you flash a non standard Rom to your phone.
I used Lg Flash Tools to flash the 10P update for my phone, E980, so I don't think that's the problem. It is the correct file. I hope anyway.