You will have to note that you can only restore signed IPSW firmware files using iTunes or 3utools.
Release Notes
It should be noted that these are the official release notes for the from Apple
iOS 10.2 introduces new features including the TV app (US Only), a new and unified experience for accessing your TV shows and movies across multiple video apps. Emoji have been beautifully redesigned to reveal even more detail and over 100 new emoji have been added including new faces, food, animals, sports, and professions. This update also includes stability improvements and bug fixes.
TV
- Use Up Next to see the movies and shows you’re currently watching and pick up where you left off
- Get recommendations for new movies and TV shows in Watch Now
- Discover new apps and the latest iTunes releases in the Store
- Access the Library for your iTunes purchases and rentals
Emoji
- Beautifully redesigned emoji that reveal even more detail
- Over 100 new emoji including new faces, food, animals, sports, and professions
Photos
- Improves stabilization and delivers faster frame rate for Live Photos
- Improves accuracy of groupings of similar photos of the same person in the People album
- Fixes an issue where Memories might generate a memory from photos of screenshots, whiteboards or receipts
- Fixes an issue where the camera would stay zoomed in after switching back from the Camera Roll on iPhone 7 Plus
- Additional support for RAW digital cameras
Messages
- Adds new love and celebration full screen effects in Messages
- Fixes an issue that sometimes prevented the keyboard from displaying in Messages
Music
- Swipe up the Now Playing screen to more easily access Shuffle, Repeat and Up Next
- Choose how to sort Playlists, Albums, and Songs in Library
News
- Stories you’ve saved for later now appear the new Saved section
- The best paid stories from channels you subscribe to will now appear in a dedicated section in For You
- It’s now easier than ever to get to the next story, just swipe left or tap Next Story while reading
Mail
- Fixes an issue that caused the Move sheet to persist after filing a Mail message
- Addresses an issue with long press activating copy and paste in Mail
- Fixes an issue in which the wrong message would be selected after deleting a Mail conversation
Accessibility
- Adds BraillePen14 support to VoiceOver
- Fixes an issue where the braille table could switch unexpectedly with VoiceOver
- Fixes an issue where sometimes Siri enhanced voices were unavailable to VoiceOver
- Fixes an issue where VoiceOver users could not re-order items in lists
- Fixes an issue where Switch Control was sometimes unable to delete Voicemails
Other improvements and fixes
- Adds notification support for HomeKit accessories including window coverings, occupancy, motion, door/window, smoke, carbon monoxide, and water leak sensors
- Adds notification support for HomeKit accessories when software updates are available to HomeKit accessories
- Improves Bluetooth performance and connectivity with 3rd party accessories
- Fixes an issue that could cause FaceTime participants to appear out of focus
- Fixes an issue that could cause FaceTime calls to appear with incorrect aspect ratio and orientation
- Fixes an issue that prevented some Visual Voicemail from completing playback
- Fixes a Safari Reader issue that could cause articles to open as empty pages
- Fixes an issue that could cause Safari to quit unexpectedly after marking an item as read in Reading List
For information on the security content of Apple software updates, please visit this website:
https://support.apple.com/HT201222