Error while 'sudo apt update && sudo apt upgrade'

Accelerated Computing CUDA CUDA Setup and Installation
1

Hi, when I run

sudo apt update && sudo apt upgrade

on fresh installation of TX2 i got this message:

W: Invalid 'Date' entry in Release file /var/lib/apt/lists/_var_nv-gie-repo-ga-cuda8.0-gie1.0-20170116_Release
W: GPG error: file:/var/libopencv4tegra-repo  Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY D88C3D385C37D3BE
E: The repository 'file:/var/libopencv4tegra-repo  Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

thanks for help