I have kickstart 1.3 en 2.04, but it only requierd a switch and an ic holder.
This one is a lot better cause of the pressing of the keys, no more searching for that switch at the back of your Amiga and first turning it off
But a kickstart upgrade is only usefull if your programs requier it and if you have a harddrive (which I don't have, but at the time it was usefull for a few tools I was running).