Remember to always double-check your network configuration and, most importantly, . With careful preparation and by following these steps, you can ensure a smooth and successful upgrade.

Navigate to the , About , or run the show version command.

This indicates that the portable TFTP server does not have administrative rights to read the file directory. Ensure you closed the app and restarted it using the "Run as administrator" option.

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Portable TFTP software runs directly from an executable file without altering system registries. Runs instantly from a USB drive.

Temporarily disable your local software firewall (such as Windows Defender Firewall) or create an explicit inbound rule allowing traffic on , which is the dedicated port for TFTP communication. 4. Executing the TFTP Upgrade to Version 1255

Download the version of your chosen TFTP software.

Use the device’s CLI command to fetch the firmware via TFTP. Typical commands:

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