Before downloading the firmware, connect the wireless router to internet via the WAN port and connect a PC/notebook (to be used for the configuration) to one of the LAN ports.
In order to access the router, the PC/notebook network card must be set to DHCP (IP automatically assigned).
At this point, the PC/notebook can be used to download CoovaAP firmware by connecting to:
In the "Download" column, download the file for your Linksys version (generally WRT54GL).