Updating iphone 3g
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).
In what is widely regarded as his greatest presentation ever, Apple's Steve Jobs introduced the i Phone to the world on January 9th, 2007.And even as other phones try to catch up, the technologies and features built into i OS 4 keep it years ahead of the competition.You can use i Tunes to update or restore i Phone or i Pod software.Visit Stack Exchange No ,you can't update the the i OS 4.2.1 to i OS 5 in i Phone 3g.
The highest supporting operating system of i Phone 3g is i OS4.2.1.(Apple discontinued i Phone 3g on June 2010).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.