IPSW is the extension of the software update file which one can download to upgrade their iPhone and iPad to the latest versions. If you are iPhone 4, 3G, 3GS, iPad, or iPod user, time is here to download iOS 4.2.1 ipsw. The iOS 4 has a massive list of features- these new additions are now available for iPad users. Those who have stable and fast connection may fire up the iTunes, and download iOS 4.2.1 directly from Apple servers. However, this post is for those people who have difficulty downloading iOS 4.2.1 from Apple.
Download iOS 4.2.1 ISPW
The new iOS 4.2.1 additions like FaceTime video calling, application folders, multi-tasking Game Center app, etc. is a big reason for all customers to upgrade. We recommend you wait at least two-three days if you are planning to update your iPhone to iOS 4.2.1 through iTunes. Apple servers face heavy load at this time, and because of this, you may not be able to complete the download.
Connect the iPhone to the computer and open iTunes. You will see a prompt, as shown below. If your iPhone is not jailbroken and the connection is stable, click the “download and update” button to start with iOS 4.2.1 update.
Now if you can’t update your iPhone in the regular way we suggest you go for downloading iOS 4.2.1 from direct download links given below.
The main advantage of iOS 4.2.1 IPSW firmware is that its a full offline installer. You can use it to restore multiple iPhone, iPad, or iPod without much help of the Internet. It is also possible to use a software like IDM to download iOS 4.2.1 in IPSW format; you can pause or re-start your download at any time in this way.
How to update your iPhone to iOS 4.2.1 IPSW
These iOS links are directly from Apple, so you don’t need to worry about it bricking your device. So, after downloading iOS 4.2.1firmware, connect your device to iTunes as usual..
Select your iPhone from the list of devices available. Then press the shift key on your system keyboard, and press the restore button in iTunes at the same time. Now, when you see the explorer (Windows) or Finder (Mac), direct it to the location where you have a copy of iOS 4.2.1 firmware. Finally, wait for 10-15 minutes until iTunes restore iOS 4.2.1 firmware to your iPhone, iPod, or iPad.