Security researchers have discovered a flaw in the firmware of some Linksys routers that could allow a hacker to gain control remotely, possibly turning a group of infected routers into a botnet. :
Cum repari un update nereusit de firmware pe un router Linksys E4200
HOW TO FLASH LINKSYS E4200 V1 TO DD-WRT FIRMWARE W/BANDWITH LIMITER OPENVPN SUPPORT - YouTube
Back to Stock Factory Firmware Linksys E4200 V2? OpenWrt FW to Linksys FW - Installing and Using OpenWrt - OpenWrt Forum
Linksys Official Support - Automatically upgrading the E4200 v2's firmware through the web-based setup page
Cisco Linksys Router: How to Upgrade the Firmware
Cisco Linksys E4200 Driver And Firmware Download | Download Wireless Driver For Windows,Mac,Linux