Restore Custom IPSW to iPhone/iPad without iTunes Using Tenorshare ReiBoot

Restoring custom IPSW to iPhone, iPad with iTunes may risk the data loss, and the whole process is pretty complicated. Even worse, if you misoperated, the device will possibly get bricked. To easily and safely restore the custom IPSW, here we will introduce an alternate way—using a powerful custom IPSW restore tool Tenorshare ReiBoot, which stands out for its ability to restore/fix/ downgrade operating system without fearing of data loss in a couple of clicks.
Now follow the steps below and learn how to download and install custom IPSW without iTunes
iOS firmware without iTunes for your iOS 11.2.1/11.2/11 iPhone.
Get Tenorshare ReiBoot downloaded and installed on your computer, then launch it.
 

Free DownloadFor Win 10/8.1/8/7/XP

Free DownloadFor macOS 10.14 and below

 Step 1. After you launch Tenorshare ReiBoot Pro, connect your iOS device to computer with USB cable. Click "Fix All iOS Stuck" section in the main interface.

 Step 2: Then click on Browse button to import the previously stored custom IPSW files. Click "Download" button to start importing the firmware package

Step 3: After all these, you can start updating your device or repair your operating system.
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