If I can, you can. My battery went to crap with the update. Yesterday I downgraded back to kitkat and rooted it to freeze the updates and remove the bloat ware. Took 5 minutes. I will help anyone that wants to do this. I have a step by step guide with links to everything you need. Yesterday was the first time I've ever downgraded and rooted a phone, ever. And it's awesome. After the upgrade my battery went from lasting all day to 4 hours max. Now it's good again