It's easy - just download Nokia's firmware update software and follow the directions. Yes. The hardest part is probably just keeping track of which software packages you have installed and then tracking them down after you flash the firmware. It should be sufficient to write down the list of installed applications listed in the Application Manager. You might also want to write down which repositories you have added, too. I haven't had any trouble personally, but it's possible. Theoretically, gregale is backward-compatible with scirocco - it's the other way around where you run into problems. (posted the same response to each of your posts)