how to update a i pod touch version 4.2.1 (8C148)

If it is updateable:

See the chart below to determine whether you can upgrade your device and what you can upgrade to. If you do not have a Software Update option present on your iDevice, then you are trying to upgrade to iOS 5 or higher. You will have to connect your device to your computer and open iTunes in order to upgrade.

IPhone, iPod Touch, and iPad iOS Compatibility Chart

Device iOS Verson

iPhone 1 iOS 3.1.3

iPhone 3G iOS 4.2.1

iPhone 3GS iOS 6.1.x

iPhone 4 iOS 6.1.x

iPhone 4S iOS 6.1.x

iPhone 5 iOS 6.1.x

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iPod Touch 1 iOS 3.1.3

iPod Touch 2 iOS 4.2.1

iPod Touch 3 iOS 5.1.1

iPod Touch 4 iOS 6.1.x

iPod Touch 5 iOS 6.1.x

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iPad 1 iOS 5.1.1

iPad 2 iOS 6.1.x

iPad 3 iOS 6.1.x

iPad 4 iOS 6.1.x

iPad Mini iOS 6.1.x

=====================================

Select the method most appropriate for your situation.

Upgrading iOS

1. How to update your iPhone, iPad, or iPod Touch

2. iPhone Support

3. iPod Touch Support

4. iPad Support

a. Updating Your iOS to Version 6.0.x from iOS 5

Tap Settings > General > Software Update

If an update is available there will be an active Update button. If you are current,

then you will see a gray screen with a message saying your are up to date.

b. If you are still using iOS 4 — Updating your device to iOS 5 or later.

c. Resolving update problems

1. iOS - Unable to update or restore

2. iOS- Resolving update and restore alert messages

Do you have a 2nd, 3rd or 4th gen iPod touch?

If you have cameras, you have a 4th gen.

IF NOT:

Do you have an A1288 or an A1318 model? Check the back of your iPod for that.

If A1288, you can't upgrade.

If not, you can update with iTunes.

If you iPod has cameras then update by:

iOS 4: Updating your device to iOS 5 or later

You need iTunes 10.7 or later on the computer

Go back to the article you asked this question from, ignore the instructions for updating it wirelessly, scroll down, and follow those for updating it from iTunes on a computer.

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