: Community firmware like OpenWrt is not yet widely supported for this specific model's TP1900 chipset, though developers on platforms like 4PDA and TP-Link Community have historically looked for ways to bridge this gap. Deep Performance Review
If you are looking for an "English firmware" for this specific model, here is the current reality and the best workarounds to manage your router effectively. Is There an Official English Firmware? tl-wdr7660 english firmware
For the vast majority of users, . It preserves the highly optimized stock Wi-Fi drivers, ensuring you get the maximum speed and stability out of your hardware without any risk of damaging the device. Only attempt to flash third-party firmware if you have experience with custom bootloaders and specifically require advanced networking features. : Community firmware like OpenWrt is not yet
TP-Link does not provide an official "language pack" switch to convert the Chinese model (V1) to English. For the vast majority of users,
Help you find a to a forum discussing the firmware.
Ensure you have the correct .bin file for the TL-WDR7660.