iOS 8.2 now officially available for download for almost all device, and if you are planning to purchase an Apple Watch, then this update is a must. If you’re not familiar with how to upgrade or downgrade the firmware, let’s briefly explain for you.
Warning jailbreakers that who are on iOS 8.1.2 or lower should avoid the iOS 8.2 update as Apple has patched the exploits used by the TaiG jailbreak and PP Jailbreak, which means they can not be used currently to jailbreak iOS 8.2.
UPDATE IOS 8.2
How to install iOS 8.2 update via OTA:
Please make sure your device has sufficient battery (> 50%) or pluged by Power Charger. Also make sure the device is connected your local WiFi network. Then checking update by going to Settings > General > Software Update. iOS will automatically check for available updates and will inform you that iOS 8.2 software update is available.
Tap Download to download the update. Wait for the download to complete and then tap Install to apply the update. If you get tired of waiting for the download to finish (it could take a while) then go do something else. Your iPhone or iPad will continue to download the update and will send you a notification when the update is ready. Go back to Settings > General > Software Update and then tap Install Now to install the now downloaded iOS update file.
Note: Jailbreakers should install the update using iTunes, as OTA updates are known to give problems while jailbreaking an iOS device with Pangu jailbreak.
How to install iOS 8.2 update using iTunes:
Step 1: Download the complete iOS 8.2 firmware from the official download links provided in our download section. [Note the download file is around 1.5GB to 2.0 GB depending on your device]
Note: If you’re downloading the firmware file using Safari then ensure that auto unzip feature is disabled or use Chrome or Firefox.
Step 2: Plug your iOS device to Computer and open the latest version of iTunes.
Step 3: Once your device is detected by iTunes, just click the “Check for updates.” button in the menu bar for updating. If you want to install a brand new firmware and erase all data, you should click the “Check for updates.” and holding down on the Option key or the Shift key for a complete recovery. Then iTunes will automatically download and update your device to iOS 8.2.
Downgrade iOS 8.2
Currently iOS 8.1.3 is the only downgrade-able firmware for iPhone, iPad and iPod touch running on iOS 8.2, and unfortunately the iOS 8.2 and iOS 8.1.3 all can not be jailbroken, you can’t downgrade even further to iOS 8.1.2 as Apple has stopped signing it.
Nevertheless, if you feel iOS 8.1.3 better than 8.2 and want to go back. Then below is a simple tutorial to teach you how to downgrade back to iOS 8.1.3 from iOS 8.2.
Step 1: First off, visit this link and download the iOS 8.1.3 IPSW for your specific iOS device. These files range between 1.5 GB and 2GB for iPhones and iPads, so be aware that it may take a bit of time to download it.
Step 2: Once you have the file downloaded, plug your iOS device into your computer and open up iTunes. Go to your device’s summary page and hold down the Option/Alt key on your keyboard, or Shift if you’re on Windows. Keep holding down the key as you click on Restore in iTunes.
Step 3: Next, browse to find the IPSW file that you downloaded and open it. iTunes will begin restoring your iPhone and will install iOS 8.1.3.
Step 4: After the process is complete, your iOS device should now be running iOS 8.1.3. From there, you’ll want to restore your backup by going to the device summary page in iTunes and clicking on Restore Backup. Give it time to restore all of your apps and settings, and eventually you’ll be back to running iOS 8.1.3 just like you were before updating to iOS 8.2.