If the new firmware causes a catastrophic failure (e.g., robot completely unresponsive):
The latest official firmware reported for the Neato D8 is version 1.7.0-2749 Neato D8 Latest Firmware
For official setup and basic troubleshooting before the cloud services fully sunset, you can still access the D-Series Quick Start Guide Neato Robotics Neato Robotics Support installation instructions for a specific update, or are you trying to fix a bricked unit How to Check the Firmware Version on Neato ROBOTICS D8 If the new firmware causes a catastrophic failure (e