Updating iphone 1 1 4 to 2 1

You could update your i Phone to i OS 4.2.1 in two ways : Automatically and Manually. Fw-300 #ya-qn-sort h2 /* Breadcrumb */ #ya-question-breadcrumb #ya-question-breadcrumb i #ya-question-breadcrumb a #bc .ya-q-full-text, .ya-q-text #ya-question-detail h1 html[lang="zh-Hant-TW"] .ya-q-full-text, html[lang="zh-Hant-TW"] .ya-q-text, html[lang="zh-Hant-HK"] .ya-q-full-text, html[lang="zh-Hant-HK"] .ya-q-text html[lang="zh-Hant-TW"] #ya-question-detail h1, html[lang="zh-Hant-HK"] #ya-question-detail h1 /* Trending Now */ /* Center Rail */ #ya-center-rail .profile-banner-default .ya-ba-title #Stencil . Bgc-lgr .tupwrap .comment-text /* Right Rail */ #Stencil . The i OS 4.2.1 have been made public by Apple and is now available to download or update. Press the Shift key(in Windows) or the option key(in Mac OS X), click on the Restore button.5. One of the main features of this release is that the taste of i OS 4.2.1 also comes up for the i Pad this time. Click the “ Download and Install “ button to update i Phone 3G / 3GS / 4 to i OS 4.2.1. Download i Tunes 10.1 from the above link and i OS 4.2.1 IPSW for i Phone from here..2. Now browse to the i OS 4.2.1 IPSW file and select it.

* Upgrading to the latest version of i OS software provides the latest features, security updates, and bug fixes.It brings features like folders in i Pad, Airplay, Airprint etc. If you want to update i Phone 3G, 3GS or 4 to i OS 4.2.1, here are the steps to do it. Not all features are available on all devices or in all regions.Battery and system performance may be influenced by many factors including network conditions and individual use; actual results may vary.

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