How to Update to iOS 5.1 – iPhone 4S, 4, 3GS, iPad 2, 1, iPod Touch 4G, 3G? Well, iOS 5.1 was released for public today. As we told you earlier that iOS 5.1 will support Japanese Siri for iPhone 4S and fix many bugs. Likely iOS 5.1 will improve battery life for iPhone 4S. So let me show you how simply update your iOS device to iOS 5.1.
We have to different ways to update to iOS 5.1. The first one is to restore your device to completely new iOS firmware, the second one is to update to 5.1 OTA (over-the-air) which will only download 50MB to your iDevice.
Required Downloads to upgrade to iOS 5.1:
These below files are required for who will restore to completely new iOS firmware.
How to update to iOS 5.1 – iPhone 4S, 4, 3GS, iPod Touch 4G, 3G, iPad 2, 1
Step 1: Connect your iPhone, iPod Touch or iPad into your computer via USB
Step 2: Open iTunes hold Alt (Shift in Windows) and click on the ‘restore’ button then point it to iOS 5.1 ipsw file you download above. Wait for between 10 and 15 minutes for the new iOS to be moved over. Congratulations.
How to update to iOS 5.1 OTA (Over-The-Air) – iPhone 4S, 4, 3GS, iPod Touch 4G, 3G, iPad 2, 1
This is pretty simple, just go to Settings > General > Software Update
Your iDevice will check the available updates, then just tap download and wait 10 to 15 minutes.
Note: Jailbreakers stay away from iOS 5.1 if don’t wanna lose your jailbreak.
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This is not working for me. I want to get rid of the jailbreak and go to 5.1 but itunes is telling me the device is not eligible for the build.
HELP .. anyone know how I should restore this 4s and take it back to normal?
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