Which (Windows, Linux, macOS) runs your portable software? Are you upgrading locally or over a routed network ?

This indicates a routing issue. Ping the device from your PC to ensure a physical connection exists. Safety Warning

Step 2: Launch the TFTP ServerOpen the portable application. If prompted for administrative privileges, grant them to allow the software to bind to the network port. Set the "Current Directory" to the folder containing your 1255 firmware.

I Tftp Upgrade Firmware Version 1255 Download Portable Hot! Here

Which (Windows, Linux, macOS) runs your portable software? Are you upgrading locally or over a routed network ?

This indicates a routing issue. Ping the device from your PC to ensure a physical connection exists. Safety Warning i tftp upgrade firmware version 1255 download portable

Step 2: Launch the TFTP ServerOpen the portable application. If prompted for administrative privileges, grant them to allow the software to bind to the network port. Set the "Current Directory" to the folder containing your 1255 firmware. Which (Windows, Linux, macOS) runs your portable software