How can i update my i pod touch if it does not give me the option for software update

Update it from iTunes on a computer as described at the bottom of this article; there isn't a Software Update option in General on iOS versions prior to 5.0. It can only be updated directly to the newest iOS release supported by the device’s hardware.

The maximum iOS version for the first generation iPod touch and original iPhone is 3.1.3.

The maximum iOS version for the second generation iPod touch and the iPhone 3G is 4.2.1.

The maximum iOS version for the third generation iPod touch and original iPad is 5.1.1.

The maximum iOS version for the fourth generation iPod touch and iPhone 3GS is 6.1.6.

If you don't know what device you have, append the last three characters of its serial number to http://www.everymac.com/ultimate-mac-lookup/?search_keywords= and load the page.

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To update

The Settings>General>Software Update comes with iOS 5 and later.

Connect the iPod to your computer and update via iTunes as far as your iPod model allows

iOS: How to update your iPhone, iPad, or iPod touch

A 1G iPod can go to iOS 2.2 via iTunes and iOS 3.1.3 via

Purchasing iOS 3.1 Software Update for iPod touch (1st generation)

https://buy.itunes.apple.com/WebObjects/MZFinance.woa/wa/touchLegacyLandingPage

- A 2G to 4.2.1. Requires iTunes version 10 or higher. If a Mac it requires OSX 10.5.8 or later.

- A 3G to 5.1.1 Requires iTunes version 10.5 or later

- A 4G to 6.1.6 Requires iTunes version 10.7 or later. For a Mac, that requires a Mac with OSX 10.6.8 or later

- A 5G to iOS 8 Requires iTunes 11.4 or later if you update via iTunes

Identifying iPod models