I spotted this post about LELA and it says clearly it doesn't support any 3rd-party firmware. I reckon this means LELA doesn't support any open-source firmware. The question is since most open-source firmware are more stable, who will need LELA if there is no problem to troubleshoot. OTOH, there are forums for the open-source firmware that provide faster responses with solutions than Linksys itself can provide. Best of all, these open-source firmware are mostly free.