[GUIDE] How to use iLex-Rat to restore iDevice
Installing iLEX RAT
Installing iLEX RAT is easy. You simply add a new repo to your Cydia sources, and install the iLEX RAT package. You’ll also need to install MobileTerminal, which makes it so that you have no need for a computer when running the restore.
To add the repo to your Cydia sources, open Cydia, click the Manage Tab, and tap Sources. Now tap Edit, Add, and type the following source URL into the dialogue box that appears: http://cydia.myrepospace.com/iLEXiNFO/
Once that source is added, the necessary package will appear. You should see an iLEXiNFO source under your list of sources. Tap on that source, and install the iLEX R.A.T. package. By the way, R.A.T. stands for Remove All Tweaks, but as you’ll see, this tool handles much more than just tweaks.
After iLEX RAT is installed, you won’t see any new icons on your Home screen. Next up, you need to install MobileTerminal, which is available from the stock BigBoss repo. Once MobileTerminal is installed, you are now ready to restore your device with iLEX RAT.
Keep in mind, that while iLEX RAT can focus on just the Cydia aspects of your device, it is still capable of returning your entire device back to a stock nature. With that said, it’s imperative that you backup your device before performing any restores. Actually, iLEX RAT itself has a backup and restore tool, but that goes beyond the scope of this introductory tutorial.
Running iLEX RAT
To run iLEX RAT, open MobileTerminal, and type ‘rat’ (without the quotes) on the command line and tap enter. The iLEX RAT interface will load, and you’ll see a plethora of options. The option that we’re going to focus on for this tutorial is the full restore (option 12), because that’s most comparable to SemiRestore.
Select option 12, select yes, and the restore will be on its way. There’s nothing else for you to do but sit back, relax, and enjoy the ride. Eventually you’ll be prompted to reboot your device.
Once your device reboots, you’ll be greeted with the traditional iOS setup wizard to reconfigure your device. The only thing that will be left on your device after a restore is Cydia, along with the source for iLEX RAT, so that you may easily install it again.
I can confirm that after using both Semi-Restore and iLex-Rat to restore my iPhone 4S, iLex-rat was the easiest and most complete restore tool to use.