I understand you're looking for for the TP-Link TL-WDR7660 router. However, I must clarify a critical point before providing guidance:
Watch these tutorials for step-by-step visual guidance on translating the interface and setting up the device: TP Link Chinese Version to English with Google Chrome NoobsPlanet How to Setup TP-Link TL-WDR7660 TONOR - How to setup router tl-wdr7660 english firmware
If this fails, you need a USB-to-TTL serial cable to unbrick via the UART headers on the motherboard—an advanced procedure. I understand you're looking for for the TP-Link
Download the from the Google Play Store or Apple App Store. Connect your phone to the TL-WDR7660’s Wi-Fi. tl-wdr7660 english firmware