Greenpois0n update question

[mdpatsfan]

I see that greenpois0n has an update RC6. I jailbroke my IP4 running 4.2.1 on redsn0w then just ran greenpois0n RC5 over it. It works great but wondering if i need to update greenpois0n on my Iphone. If so do I just run the update over top what already on there? What are your thoughts? Thanks for looking.