so i was an idiot and killed someone close to Fyr...i still have corprus, how can i get him to forgive me...or is there a way to bypass him...i think not but if anyone can help that would be greeeatt, i kinda want to go on with the main quest now, ive had enough faction stuff for a while

You can't get amnesty from him. I suggest reloading a game where you did NOT kill one of his daughters, and proceed from there.

Or else, if you foolishly saved after killing his daughter, look up the following spells in the console and enter then using the Player->AddSpell command.

-Blight Immunity
-Corprus Immunity
-Common Disease Immunity

Also look up the Journal entry for the cure and enter it with the Journal NAME ### command.

well i duno if it works for this aswell but i killed all of those corprus guys and fyr hated me but i bribed him all the way to 100pts and he was ok with me after that.so if you are lucky maybe that should do it.