What this also means is that by flashing the update, you’re effectively wiping your phone and it will be a fresh install, so all the data will be gone and your phone will be as if it just came right out of the box. Of course this isn’t exactly for everyone since we imagine not everyone is tech savvy enough to figure this out on their own, so if you’re unsure about what you’re doing, you might want to hold off on it first. Since the update is already on Nokia’s servers, we can only imagine it won’t be long before it begins making its way to Lumia 820 and Lumia 920 devices.