If your regional TP-Link site doesn't display a "Firmware" tab (this sometimes happens for older models), the file may not be available. In that case, your next best option is to contact TP-Link Support directly.
The is widely regarded as a top-tier budget gigabit router, offering stable performance and high value for home users. It is technically identical to the Archer A6 V3 and is praised for its ability to handle 10–15 devices simultaneously without significant lag. Expert & User Review Summary tp link archer c6 v320 firmware link
3.20(2) - 2022/02/21