: The release date of the software (April 7, 2021).
The technical specifications you provided refer to a specific for the TP-Link TL-WR850N wireless router. This particular build is often associated with ISP-customized versions (like those used by Vianet or other regional providers) rather than the generic retail firmware. 🛰️ Device Overview 3160 091 v60310 build 210407 rel7370n tlwr850n
An entry-level home router from TP-Link, often flashed with OpenWrt/DD-WRT by enthusiasts. Firmware files for it sometimes contain version strings similar to v60310 build... , but not identical. : The release date of the software (April 7, 2021)