DFU mode, with the last update of RedSn0w 0.9.14b2
RedSn0w 0.9.14b2 allows you to create a firmware file that will put your device into DFU mode after a normal reset done with iTunes. Of course, the guide can also be performed on the iPod Touch and iPad. Here's the video showing the procedure to follow, find the detailed guide below:
Step 1: Download and run RedSn0w 0.9.14b2 Step 2: On the main screen click the RedSn0w you click Extras -> Even More -> DFU IPSW and click OK in the dialog box that appears. Step 3: Look for a file with IPSW valid signature from Apple. For example, if you have an iPhone 4, and you want to select the firmware iPhone OS 5.1.1, since it is the only firmware that Apple is signing up right now for this device. You can download the firmware file from our Firmware IOS. Step 4: Once you have selected the file, RedSn0w will start the process of creating a new IPSW firmware that will put your device into DFU mode when restoring. This firmware file will be placed in the same location as the original firmware file, and will be named with the prefix ENTER_DFU. For example, if you have selected the 5.1.1 firmware iPhone OS for iPod touch 4, the original file should be 1_5.1.1_9B206_Restore.ipsw, and the new file should look like this: ENTER_DFU_iPod4, 1_5.1.1 _9B206_Restore.ipsw.