If the TP-Link website shows no firmware for v3.20:
The V320 is predominantly sold in European markets. The official repository is located on the TP-Link Poland, Germany, or UK support sites. tp link archer c6 v320 firmware link
Direct navigation path:
If the drop-down does not show V3.20, use this URL structure:
https://www.tp-link.com/[region]/support/download/archer-c6/v3.20/ If the TP-Link website shows no firmware for v3
Replace [region] with pl, uk, de, fr, or it. If the drop-down does not show V3
TP-Link serves different regions (EU, US, UK, India, Australia). If you live in Europe, use tp-link.com/eu; for India, use tp-link.com/in. The firmware is often identical, but the UI language and Wi-Fi channel regulations differ. Always prefer your local TP-Link domain.
TP-Link does not always publish detailed changelogs for every minor revision, but the recent updates for V3.2 generally include: