Topic: Upgrading firmware

Hi,
I have linksys wirless G routers, that I am using for Access Points. These don't have chillispot firmware on them, my chillispot is on a seperate server. I was wondering if certain firmware won't work with chillispot. I was talking to someone about this and they said that finding the right firmware to work, took a while. I believe the firmware is actually that of linksys anyway. If I upgrade the firmware would this help, or would this make it not connect to chillispot?
thanks,
slack