AWS IOT Device Tester v 2.1.0 for AWS Greengrass now supports AWS Greengrass v 1.9.4. The latest version also supports qualification of AWS Greengrass devices with ARM v6l architecture.

from Recent Announcements https://aws.amazon.com/about-aws/whats-new/2019/10/aws-iot-device-tester-v-2-1-0-for-aws-greengrass-now-available/