iPhone 3G icon

Download ios 4.0 for iPhone 3G official firmware


Version: 4.0
Build: 8A293
Size: 292.09MB
Identifier: iPhone1,2
Platform: s5l8900x
Date: 2010-06-17
MD5: 851ba4b463ff6c7f0f07db3ac9a600d5
SHA1: ee1eba9281b902d7ff3f24d50f9aebff0df27f92
Downloads: 1

These are the instructions to flash Stock firmware on iPhone 3G () using the Card update method.

Requirements: Your Iphone Smartphone or tablet should have atleast 20-30 percent of battery to perform the flashing process and a Micro SD Card (must).

We propose to install ios without hitch, Empty at least 4 GB of storage space on your phone so no disruption occurs during the installation process.

Back up your device information

Step 1: Install the latest iTunes for Mac, 64-bit or 32-bit for Windows.

Step 2: Connect the iPhone to your Mac or Windows with a USB cable.

Step 3: Open iTunes and click on the top menu on your iPhone, iPad or iPod touch..

Step 4: Click on the "Restore iPhone" button by holding down the "Option" key on the Mac and "Shift" in Windows.

Step 5: In the opened window, go to the path to the iOS file you received and select it and click the "Open" button.

Step 6: ITunes displays a message to you to clear the entire device and update to the iOS version given, do not worry.

Step 7: Then click the "Restore" button.

Step 8: ITunes unloads iOS Version: 4.0 and sends it to your iPhone, iPad or iPod touch.

Step 9: After restarting and displaying devices in iTunes, it's time to transfer previous information.

Step 10: To do this, click the "Restore from this backup" option to update your iPhone to the new one with the new iOS.


Notic: Please keep in mind that, you must flash iPhone 3G () firmware at your own risk and also full responsible with you.


Please be informed that IOSUpdater.com only share the official firmware WITHOUT ANY modifications. All ios firmware here are for home or personal use only.