Go to > Firmware Upgrade in the router's web UI.
Linksys WRT610N v2 Go to product viewer dialog for this item. Wrt610N V2 Firmware
Custom firmware unlocks advanced features like VPN servers (OpenVPN/PPTP) and improved wireless stability. Linksys WRT610N v2.0 - [OpenWrt Wiki] Techdata Go to > Firmware Upgrade in the router's web UI
Upload the .bin or .tgz file and wait for the system to reboot. Wrt610N V2 Firmware
Access the web interface, navigate to Connectivity > Details under Firmware Update. Upgrade Process: Download the firmware from a repository like SourceForge .