Trouble updating ipod touch to 4 3
The release of i OS 4.3 brought i Pad 2 compatibility.
Apple did not drop support for any devices with this release, as this had already been done with the release of i OS 4.3 seven months earlier.
No official name was given on its initial release; Apple marketing literature simply stated the i Phone runs a version of Apple's desktop operating system, OS X.
Apple announced i Phone OS 2, at the i Phone software roadmap keynote in March 2008, and it was released to the public on July 11, 2008 alongside the i Phone 3G.
June 2007 saw the official first version release of what eventually became i OS – concurrently with the first i Phone.
i OS did not have an official name until the official release of the i Phone software development kit (i Phone SDK) on March 6, 2008.
Apple did not drop support for any devices with this release.
i Phone OS 2 was compatible with all i OS devices released up to that time.
With the announcement of i OS 5.0 on June 6, 2011, a USB connection to i Tunes was no longer needed to activate i OS devices; data synchronization can happen automatically and wirelessly through Apple's i Cloud service.
Apple announced i OS 4 in March 2010 and it was released to the public on June 21, 2010 alongside the i Phone 4.
With this release, Apple dropped support for the original i Phone and i Pod touch, the first time they had done this.
i OS 4 was the first major i OS release that reflected the name change.
Apple concurrently provides the same version of i OS for the comparable model of i Phone and i Pod Touch, usually devices released in the same calendar year.