How to Downgrade iOS 9.1 to iOS 9.0.2

iOS 9.1 is a worthwhile update with bug fixes and new emoji for most iPhone, iPad, and iPod touch users who are running iOS 9, but some users who have updated from iOS 9.0.2 to iOS 9.1 may decide they’d like to go back to the earlier version. Maybe it’s because iOS 9.0.2 has a jailbreak, maybe it’s because of some newfound issue experienced with iOS 9.1 which wasn’t there before, whatever the reason, we’ll show you how to quickly downgrade from iOS 9.1 to iOS 9.0.2.

Do note that downgrading is not always possible, and though you can downgrade from iOS 9.1 to iOS 9.0.2 while Apple continues to sign the 9.0.2 release, you can’t use this process to downgrade from iOS 9.1 back to iOS 8.4.1 for example, because no version of iOS 8 is being signed by Apple. This is why upgrading iOS is often a one-way street, Apple tends to close the signing window fairly quickly. Thus, if you do want to ditch iOS 9.1 for some reason and go back to the riveting iOS 9.0.2 release, you’ll want to do it sooner than later.

Downgrade iOS 9.1 Back to iOS 9.0.2

You can do this from iTunes on Mac OS X or Windows PC, it’s not particularly complex though it does involve using IPSW to update iOS similar to how you would with an upgrade, except in this case it’s downgrading to a prior version instead:
1. Back up your iPhone, iPad, or iPod touch to iTunes or iCloud, if not both – don’t skip this, you don’t want to lose your stuff
2. download the iOS 9.0.2 IPSW file for your specific device, be sure the model matches up to yours otherwise the firmware will not work – put the .ipsw file somewhere easy to find, like the Desktop or My Documents
3. Launch iTunes on the Mac or PC and connect the the iPhone, iPad, or iPod touch to the computer via the devices USB cable
4. Select the device from iTunes and go to the Summary page, then do one of the following:

• For Mac: OPTION + click the “Check for Update” button 
• For Windows: SHIFT + click the “Update” button 

5. Select the iOS 9.0.2 firmware file (the .ipsw file) you downloaded in the second step and choose to Update

Pretty easy, there’s no DFU mode and no recovery mode required, iOS 9.0.2 will install onto your iPhone, iPad, or iPod touch, replacing iOS 9.1.

It’s easy, but should you do this? For most users, the answer is no. But, if you want to jailbreak iOS 9 on an iPhone, iPad, or iPod touch with Pangu tool, you’d have to be running a compatible version of iOS 9.0.2, and that’s probably the only reason to bother leaving iOS 9.1 behind.

Source: OSXDaily



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