The Belkin is is v1112 so I should be able to flash it. But do I need to? The belkin f5d7230-4 has a "Use as Access Point" option, which I have enabled and given an IP in the same subnet as the linksys router. So at this point I can manage both APs with a wired connection going from the Belkin to the Linksys. I want to be able for the belkin f5d7230-4 to act as an AP to the Linksys WRT54G2 without a wired connection going between them.
But what confuses me is that bridge mode and AP mode is already available on the stock firmware for the Belkin. I do not want to run a cable between the two wireless routers.
The aim is to have the belkin upstairs or in another room to act as an access point to devices in that area. The Linksys is downstairs connected to the internet. The linksys is already providing wireless to some clients.