Resolving vulnerabilities in the printer's network stack.

Use a tool like 7-Zip or WinRAR to extract the contents.

Connect your printer via USB and run the TSC Diagnostic Tool.

Firmware for these devices is usually flashed using the Diagnostic Tool (DiagTool) available on the TSC Printers Support site. Common Reasons for This Update

The .rar archive typically includes the .img or .bin firmware file along with an update utility.

Improved stability for USB or Ethernet connections.