i OS features an easy-to-use interface, amazing features, and rock-solid stability, and it is the foundation of i Phone. When i Tunes opens, select your i Phone under Devices in the Source List on the left. In the i Phone Summary pane, click Check for Update. How to update / restore your i Phone/i Pod using the downloaded IPSW file: 1. OPTION-click (on Macs) or SHIFT-click (on PCs) on the Update / Restore button in i Tunes 3. If you choose to restore, all data is erased from i Phone or i Pod, including songs, videos, contacts, photos, calendar information, and any other data.All i Phone or i Pod settings are restored to their factory condition. Do not disconnect your i Phone until the update has finished.Apple recommends updating i Phone or i Pod touch to use the latest software.
You should ensure that you have enough free space on your Mac or PC to accommodate a backup that matches the capacity of your i Phone or i Pod (4 GB, 8 GB, 16 GB, or 32 GB) if you proceed with the this backup.Far from suffering from the "feature creep" that typically bogs down operating systems over time, i OS has managed to stay relatively snappy and is more internally consistent than anything else available today.And i OS 8 — launching on devices this fall — looks to evolve the story even further.If you need i OS 5 like features on your i Phone 3G, try Whitedoor(it may help you).
i OS features an easy-to-use interface, amazing features, and rock-solid stability, and it is the foundation of i Phone.In the five-plus years since then, the i Phone, i Pad, and i Pod Touch have literally redefined the entire world of mobile computing.