The firmware version 3.16.0 0.9.1 v6031.0 Build 210407 Rel.7370n is for the TP-Link TL-WR840N V6 wireless router. This specific build, released around April 7, 2021
: Typically refers to the internal version of the software's architecture or a specific carrier/regional configuration. firmware version 3160 091 v60310 build 210407 rel7370n tl