I have an lg g4. I recently purchase the my passport ultra 2t external drive. I formatted it and conected it to a remake USB. When I plug it into my phone to save to the storage disc...it says unable to open (on a app). And it doesn't show at all on the LG file manager. I have read on some forums you can override the system to professional mode and root it; will this work on the Lg g4. I also read that it doesn't work cuz the G4 can only read up to 128g. Help please.....