How to Upgrade iPhone firmware from iOS 4.3.3 to iOS 5.0.1/5.1.1


Have an iDevice? Want to upgrade your iPhone iOS from 4.3.3 to iOS 5.0.1/5.1.1 ? Yes because it’s most advance mobile operating system yet with 200 new features including iMessage, Notification center, Newsstand, Reminders, Camera, Photos, Twitter, Safari, Wi-fi Sync, Game center, AirPlay Mirroring and much more.
iOS 5 is Compatible with:
iPhone 3GS, iPhone 4, iPhone 4S
iPad , iPad 2, The new iPad
iPod touch 3rd Generation, iPod touch 4th Genration

If your iPhone is Factory Unlocked then simply restore and upgrade it from itunes and use Absinthe 2.0.4 to unetethered  jailbreak
If your iPhone is not Factory unlocked for example you bought it on Contract or you dont have official Sim card You need to do following steps

Tools required to upgrade iPhone firmware

  • TinyUmbrella 5.11.01
  • Snow breeze for windows
    Pawnage tool for Mac
  • itunes 10.6.3
  • iOS 5.0.1 custom firmware

Upgrade iPhone iOS 4,3,3 to iOS 5.0.1/5.1.1

Steps
  1. First of all always make backe up of your iDevice Before You Upgrade
    Backup your iPhone data Before you upgrade
  2. Save SHSH blobs using Tinyumbrella 5.11.01
  3. Open Pawnage/Snowbreez
  4. Select your Device
    Select your iPhone Device
  5. Browse custom firmware iOS 5.0.1 and Click Next
    Browse custom ISPW
  6. Select export mode and Select Build, Pawnage will start cooking your firmware which will Preserve Your Baseband from upgrading
    Select Expert mode in Pawnage tool to upgrade your iphone
    cooking ISPW
    Building ISPW
  7. Put Your Device in DFU mode. Pawnage will tech you follow its steps
    Turn off the iDevice and pluged in
    Turn Off your iDevicePress Power and Home Button together for 10 sec
    press power and home button togetherNow press Home button for 10 sec
    Hold Home button Now you are in DFU mode
    Now u are in DFU mode
  8. Open itunes Press Shift, Click restore and select custom restore firmware (for windows)
  9. Press option (alt) button, click restore and select custom restore firmware (for Mac)
    itunes latest
  10. Let it done
  11. After Installing Go to Home Screen Open Cydia search UltraSnow, Install it
  12. Reboot Your Device and enjoy

Give it try to upgrade your iPhone, iPad, iPod touch firmware from old iOS 4.3.3 to newer iOS 5.0.1 or 5.1.1 and let us share your upgrading experience via comments. If you face any problem regarding in updating your iDevice firmware.



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