This is RIAPS release version 1.1.18.  It contains the following RIAPS preloaded images:
* SD card images for TI Beaglebone black boards
    - Ubuntu 18.04.5 LTS, 4.19.94-ti-rt-r45
    - riaps-bbb-4GB-v1-1-18.img.xz
* SD card images for Raspberry Pi 4 boards
    - Ubuntu 18.04.4 LTS, 5.3.0-1017-raspi2
    - riaps-rpi-8GB-v1-1-18.img.xz
* SD card images for NVIDIA Jetson Nano boards
    - Ubuntu 18.04.4 LTS, 4.9.140-tegra
    - riaps-nano-32GB-v1-1-18.img.xz
* Virtual Machine Disk Image created using VirtualBox (v6.1.12 r139181)
    - Ubuntu 18.04.5 LTS, 5.4.0-47-generic 
    - riaps-devbox-v1-1-18.vmdk.xz
* Eclipse 2020-06 IDE for C/C++ Developers (v4.16.0) install bundled with RIAPS example projects
    - riaps-eclipse-v1-1-18.tar.gz

To verify this download, do the following:

# First, verify the GPG signature on SHA256SUMS
$ gpgv --keyring /etc/apt/trusted.gpg SHA256SUMS.sig SHA256SUMS
# should output 'Good signature from X'

Note that you must have our public key to be able to verify the signature.

# Next, verify the SHA-256 hashes
$ sha256sum --check SHA256SUMS
# should output 'fileX: OK' for each file