December 27, 2011 9:18 AM updated: December 27, 2011 9:21 AM

First use a mini(http://www.myopenrouter.com/download/29549/DD-WRT-for-NETGEAR-WNR3500L-Mini-C... dd-wrt build to do the initial flashing, this is required by the original netgear firmware. After that you can flash regular builds, e.g. my dlna, vpn build or dd-wrt's builds.