o.k can someone give me very layperson's instructions on how to get latest version as I don't wanna bugger this up..I can't afford to lose 700 waves..
I am a lady so please be gentle with me as I am NOT a techy..

just use the chrome waves apps that will be a lot easy for you.
you just need to upgrade so long as you have your seed and password, you won't experience any difficulties with it.