If you can provide the associated with "sone214," I can give you a detailed step-by-step walkthrough for that specific update.
No, but it is highly recommended. Security patches and battery improvements justify the update. However, if you rely on third-party firmware mods for uncapped volume, installing this will overwrite those modifications. sone214 upd
Within 24 hours of the going public, the r/SONE subreddit saw over 1,400 posts. Sentiment is overwhelmingly positive, with a few notable outliers. If you can provide the associated with "sone214,"