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iPhone 3G iOS 4.2.1 (8C148) Download IPSW Firmware File

iPhone 3G iOS (Original IPSW Firmware) official IPSW download & see Instructions below how to do iOS update in your iPhone 3G device.

iPhone 3G iOS 4.2.1 (8C148) IPSW Firmware Download


Filename iPhone1,2_4.2.1_8C148_Restore.ipsw
Filesize 339 MB
SHA256sum 98e5969c3baed660c9a26e94cd7ed4b3cdb7175900f448bcc2223bf885835ce0
MD5sum 8b1657935408a1638b69740b282f62b3
SHA1sum d2ed58586e8ca2153f2e2ec585bba8afc5173378
Identifier iPhone1,2

How to do an iOS update:

  1. NOW, Open Settings.
  2. Click on >> General >> Software update >> Download and install.
  3. Get enter your passcode.
  4. Click the “Agree to terms and conditions” 2 times.
  5. Wait until the new update gets downloaded.
  6. After that, tap on Install when prompted

iPhone will restart 2 times during updating the new iOS update. Now, you did not press any key & just waited until an update to get completed.

How to Install iOS Firmware Using IPSW File

If you can install the iOS firmware using Windows or Mac OS. But, first, you download iTunes first on your PC. Download the Officially latest version of iTunes from the official site of Apple.

  1. Let’s connect your iPhone device to your computer, Via USB Cable.
  2. Open iTunes and select your device.
  3. To select the iPhone 3G IPSW file, you need to press a definite key:
    Only Mac User; – Hold on the “option” key and then click on “update”.
    Just Windows User – Hold down the “Shift” key and then click on the “Update” button.
  4. Now, choose the iPhone 3G IPSW file that you have downloaded and click on the selected button.

That’s it. Now you have successfully finished installing, If you have any queries about this then feel free to contact me.

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