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HI ALL I HAVE LG G3 D855 WHEN I POWER IT ON I GOT A MeSSAGE " BOOT VERIFICATION VERIFY . I WANT TO RECOVER IT BUT WHEN I CONNECT IT TO MY PC BY USB CABLE IT IS NOT DETECTING I TRY SOFT AND HARD RESET BUT NOTHING. THANK YOU ALL FOR HELPING.

Hello tdye08, Try to enable USB debugging first, From a Home screen, navigate: Apps > Settings > Developer options.Ensure the Developer options switch (located in the upper right) is turned on .Tap USB debugging to enable If Developer Options are unavailable, navigate: Apps > Settings > About phone > Software info then tap Build number seven times. Cheers!