So, what does "TL-WDR7660 English firmware" actually mean for most users? It means three possible solutions: finding a hacked firmware, changing the language via a hidden menu, or using a browser translator. Short answer: No, not for the Chinese hardware version.
If you flash OpenWRT, you will have a perfect English interface. However, this voids your warranty and requires technical skill. tl-wdr7660 english firmware
A: Yes. Even if the UI is Chinese, you can download the English manual for the TP-Link Archer A6. The menu options are identical in layout. So, what does "TL-WDR7660 English firmware" actually mean