the version on it is 4.1 (8B117)
Carrier 8.0
i want to upgrade it to a higher version. Where and what will it cost me.

Anoruo: the version on it is 4.1 (8B117)
Carrier 8.0
i want to upgrade it to a higher version. Where and what will it cost me.

. If you upgrade your iPhone, two possibilities may happen ;


1. If you have a jail broken iPhone, You will lose your jailbreak
2. If you have an unlocked iPhone, you may lost it too.

Before updating your iPhone , you need to take backup of your data files from your iPhone . After that, use Remote unlocking method to unlock it . It doesn't requires jailbreaking and it is one of the permanent unlocking solution too. After unlocking your iPhone using this method, you can update or downgrade your iphone without any interruption . it won't gets locked again . If you have completed unlocking and updating process, you can use restore service to restore your data files from backup .

Use the steps to upgrade your iPhone to a higher version :

Connect to iTunes on the computer you usually Sync with and “ Check for Updates “...

If an Update Appears Install it... if not... you are up to date for your particular Device...

http://support.apple.com/kb/HT4623 (How to update your iPhone, iPad, or iPod touch)

Source: Theunlockspot.com