I have a software version 2.9 how to update it to 4.0 or 5.0 in iphone

Yes, you can download iOS 11 Final version from Team Cydia.

Download iOS 11 Final IPSW for iPhone and iPad

on a iPhone 3 it is not possible to install iOS 6 !
IOS 6 is possible only on iPhone 3GS / 4 / 4S
- There are two ways to upgrade the iOS version of your iPhone, iPad, or iPod Touch - via connecting the device to iTunes on a computer
- or directly from within the device, but only since iOS 5, it is possible to upgrade the iOS version without the need to connect the iOS device to a computer (over-the-air update)
just go to: settings - general - software update

What's the current version of your iPhone?
iOS4? or you want your iPhone back to iOS4?
If you do not back up for IOS4, you won't update it to the version before iOS 6 now, as APPLE has stop support the Verification of old version
I your current version is iOS 4 and you want to update it you can update by iTunes easily. Just download newest iTune on PC and link iPhone to PC, then it will notice you for the update information.

You can get the Remote Unlock service from the site
www.unlock-zone.com/supported-phones/rs5wp7/ and unlock it easily.

Hi, You can unlock your iPhone4 safer and easier through remote unlocking method. It is also an affordable method too. You can get the remote unlocking for your iPhone4 from www.wickedunlock.com/apple-iphone-4/rs11wp9/ Here are the steps for unlocking an iPhone 4,
1. Wait for us to send you an email saying your phone has been activated or remotely unlocked.
2. Install the latest version of iTunes.
3. Make sure your Apple iPhone 4 phone software is updated to the latest version using the iTunes software.
4. Connect your Apple iPhone 4 to iTunes with a NOT ACCEPTED SIM card.
5. Wait until iTunes detects your Apple iPhone 4.
6. Disconnect your Apple iPhone 4 and reconnect it after 10 seconds.
7. Your Apple iPhone 4 is now unlocked.

When it comes to unlocking Iphones, Remote unlocking is the best method to be followed or used. . you can unlock your phone instantly within few minutes. This site simpleunlocking.com offers remote unlock for the iPhone. here are the instructions to follow while unlocking the iphone.
1. Allow us to send you an email saying that your phone has been activated or unlocked remotely.
2. Install the latest version of iTunes.
3. Make sure your iPhone 4 phone software is updated to the latest version using the iTunes software.
4. Connect your iPhone 4 Apple iTunes with a SIM card not accepted.
5. Wait until iTunes detects the iPhone 4.
6. 4 Disconnect the iPhone and reconnect after 10 seconds.
7. 4 Apple iPhone is unlocked.

When it comes to unlocking Iphones, Remote unlocking is the best method to be followed or used. . you can unlock your phone instantly within few minutes. This site Unlocking4U.com offers remote unlock for the iPhone. here are the instructions to follow while unlocking the iphone.

1. Allow us to send you an email saying that your phone has been activated or unlocked remotely.

2. Install the latest version of iTunes.

3. Make sure your iPhone 4 phone software is updated to the latest version using the iTunes software.

4. Connect your iPhone 4 Apple iTunes with a SIM card not accepted.

5. Wait until iTunes detects the iPhone 4.

6. 4 Disconnect the iPhone and reconnect after 10 seconds.

7. 4 Apple iPhone is unlocked.

contact your service provider

There are many ways to update iPhone. The easiest way is to update via air. Certainly, iTunes is another great choice. Just follow below steps.

Update iPhone to iOS 12 via Air
1. If a pop-up panel shows you that iPhone latest version iOS 12 is available, you can click on the "Install Now" button to start to update iPhone to iOS 12.
2. It is also accessible to check out if iOS 12 is available manually now. The following steps will instruct you to make it.
a) Connect iPhone to a good Wi-Fi network and make sure your iPhone storage is enough. You also need to ensure that the battery of your iPhone can support the update.
b) Click on "Settings > General > Software Update> Download and Install" successively and iPhone will start to download and install iOS 12 right away. Wait until the update is completed.

Update iPhone to iOS 12 via iTunes
1. In order to use iTunes to update iPhone to iOS 12, you can first download iOS 12 IPSW file from this website (click here).
2. Run the latest version of iTunes on computer and insert iPhone to computer.
3. Click on iPhone icon on iTunes interface and then hit "Summary> Check for Update".

4. Choose the IPSW firmware file that you have downloaded beforehand by performing the following actions in iTunes: >
Mac: OPTION + Click on the "Update" button in iTunes
Windows: SHIFT + Click on the 'Update' button in iTunes

5. Navigate to your computer folder to choose the IPSW file and then click on "Update" button to confirm that you would like to install iOS 12 in the pop-up panel.

6. Wait until the update is over and iOS 12 is installed on iPhone. In the end, your iPhone will reboot with iOS 12 successfully installed.

For more details, check: How to Update iPhone to Latest iOS 12

Here is simple guide for those Users who will be first time upgrading their iPhone 2.2 or 2.2.1 to firmware 3.0. The guide is applicable for Upgrading iPhone 2G/3G 2.2 or 2.2.1 to OS 3.0 and also for iPod Touch. Please note in order to upgrade iPhone to firmware 3.0 you must have installed iTunes 8.2.
How to Upgrade iPhone 3G 2.2/2.1 to 3.0 firmware 1. Connect your iPhone 3G to computer
2. Open iTunes 8.2
3. Select your iPhone under Devices in the Source List on the left.
4. In the iPhone Summary pane, click Check for Update.
5. Click Download and Install. Do not disconnect your iPhone until the update has finished
That’s it, Once update is finished your will have iPhone 3G running latest firmware 3.0.

Please rate this solution
RNJ VINODKUMAR