Linksys e2500 v3
Hardware version 2.1 (E2500-RU) There is a Russian model E2500-RU, hardware version v2.1. It has been reported that one can hexedit the first four bytes of the E2500v1 trailed build's header from "E25X" to "25RU", to allow flashing to DD-WRT. Flashing hardware version 3