do it, u wont regret it. I loved my n8 as it was, i didnt think it could get any better. I was wrong! Anna has made it faster and smoother than it already was, the browser is even better, and my phone is running more efficiently now, i get 2 more hours of web browsing per charge. Do it! U wont regret it!
I used fota and i lost no data at all, its easy, takes a while, but its worth it. Have ur battery full and the charger left plugged into the wall, it uses alot of battery. But its so worth it!!