What happens when iPod touch4 is updated to that 5 version. Will the data be deleted when updating?

If you're using iOS 4 right now, upgrading to iOS 5 will erase all your data, but accordingly, iTunes will back up all your data (including apps) for you. iOS to iOS is different, iTunes will only back up things like settings, **, notes, etc., and will not back up applications, because this iOS 5 "same level" upgrade does not delete any data, and the backup is for double insurance.

The biggest problem with iOS 5 at the moment is the short battery life, although the official release, claiming to have fixed the battery life, but the problem is still there, Apple is currently investigating the cause of iPhone 4S (including all iOS perfect jailbreak, iOS and are not perfect (to boot with a computer). The jailbreak software is redsn0w and snowbreeze, but if you want to cross, red snow is recommended. After jailbreaking, Cydia can download semi tethered, and you can restart without computer booting, but there are many problems, which will cause many programs to fail to run.

Not recommended for newbies.

iOS 5 has 200+ new features. The top 10 new features have written so much for you, I hope you'd better think for yourself. Of course, this is only my personal experience, and it may not be a good illustration of the general problem, but I hope you don't have to pay the price for being irresponsible.

Rest assured, the update won't erase the data.

If it's already there, there's no need to update.,Novices don't feel anything about the update.。

If your touch has been jailbroken, you will have to do it again, and use the corresponding jailbreak software (which is not available at the moment).

If you don't want to jailbreak, you can update it casually without any pressure.

Some aspects have been optimized, such as battery life.

The update process is to save all the data to the computer and then copy it to the touch, if you have jailbroken before, the part that has not been purchased will not be saved to the touch.

iPod Touch4 uses the iOS system, which can be upgraded up to now.

The iPod Touch4 upgrade system is operated as follows:

Step 2: Connect your iPod to your computer with a data cable.

Step 3: Click on "Check for Updates".

The highest can only be raised. However, it is not recommended to upgrade, the best version for the Touch4 is.

iPod touch4 upgrade method is the same as iphone4s, ipad2, the landlord can upgrade through two methods, one is their own ota upgrade, the other is through iTunes upgrade.

iPhone4s upgrade tutorial.

iPhone iPad Firmware Update Method:

Method 1: Upgrade through the built-in OTA of the system.

This is the first time that Apple iOS devices can upgrade the system through OTA, as long as they are in an environment with a wireless network, no god needs a data cable and iTunes, through the settings - general - software update can be directly ** and install the upgrade package.

Upgrade through OTA without loose line.

Method 2: Upgrade automatically through iTunes;

This method should be familiar to everyone, just open iTunes, go to the device information page, click the "Update" button in it, and then wait patiently.

Method 2: Update via iTunes.

Currently, iOS system patches are already free**, and if users pass iTunes**, the file size will be up to hundreds of MB wide; If you choose to update directly through the software that comes with your iOS device, the size of the patch file is about 50MB.

What is OTA Upgrade?

The above is the upgrade method of ipod touch4 upgrade,Apple's upgrade method is still relatively simple,It's basically push and prompt,The landlord should look at it。

iPod touch installation Siri tutorial.

How do I disassemble my iPod touch4?

iPod touch4 how to remove cydia

iPod touch4 imperfect jailbreak how to boot up.

iPod Touch4 updates the iOS system version as follows:

Step 2: Connect your iPod touch4 to your computer with a data cable.

Step 3: In the summary interface, click "Update" and follow the instructions of iTunes to upgrade the system version.

iPod Touch4 updates the system version as follows:

Step 2: Connect your iPod touch4 to your computer with a data cable.

Step 3: On the summary screen, click "Check for Updates" and follow the iTunes instructions to update the system version.

On your iPod, go to Settings - General - Software Update and see if an update is available.

Is it that the new system has not been updated.?