RTManage.exe is a tool you can use to manually update the Roundtable device without requiring the OCS Software Update Server.  Once you download and install the tool, the usage is via the command line.  All you need to do is connect the device via a USB cable to your machine and you should be able to update it via this tool.

Relevant links:

• Microsoft® RoundTable™ Management Tool
• Microsoft® RoundTable™ Deployment Guide
• Microsoft® RoundTable™ Firmware

Additional Roundtable links:

• Microsoft® RoundTable™ Manuals
• Microsoft® RoundTable™ Users Guide
• Microsoft® RoundTable™ Quick Reference Card
• Microsoft® RoundTable™ Release Notes

Source:→ OCS Blog