AMX Error Unsupported File Type When Downloading Code to NetLinx Masters
Technical Support Guide
Written by Will Fraser
Updated at April 14th, 2026
Table of Contents
Brand:
- AMX
Models:
- Netlinx
Symptoms:
- Code will fail to download completely when transferring to a Netlinx Master.
- Some files will transfer to the Master but not all.
- When sending files from Visual Architect this error is produced.
Cause:
The firmware on the Netlinx Master is Pre-Duet firmware and the Java files being transferred are not supported.
Resolution:
Update the master to the most recent version of Netlinx Duet firmware.