Post [q] i deletet android os on my htc desire s,pls help.

hy,i tried to root my htc desire s. I have used htc desire s all in one toolkit,i folowed all the steps,but when i got stuck,and i must say i am not very good with this stuff i pressed flash kernel and selected some image that was in all in one toolkit,now my phone is stuck in booting,all it says is htc,i can enter recovery mode by pressing power and volume up buton,but the my phone switches in twrp,how can i get my softvare back and get my phone working again,pls help.