Anyone who has their fair share of the iOS experience will know that working with firmware versions can be downright tricky. This is especially true if you want to downgrade to earlier versions. Don't like the latest firmware version? Tough luck because once the latest firmware is released, Apple would usually stop signing the earlier versions at the soonest time possible, making it impossible for users to downgrade. Or at least for those who haven't saved their SHSH blobs. But that's on a different matter. Here's a quick tip so you can check which firmware are still being signed by Apple.
How to Check Which iOS Firmware Versions Are Still Being Signed by Apple?
If a certain firmware is still being signed by Apple, it means that you can easily use iTunes to restore to that particular firmware without having iTunes throw a plethora of error messages your way. An unsigned firmware will not be authenticated by Apple's server. This is Apple's way of making sure that all iOS users are up-to-date, firmware wise.
So how do you check if a particular iOS firmware is still being signed by Apple? That's easy, you just need to visit the URL below:
As you can see, the website is pretty self-explanatory. If it says "YES", then that particular firmware is still being signed by Apple which means you can downgrade to that version via iTunes with no problems.
The website also offers plenty of useful information like the build number of the firmware versions and when were they released. You can also check which beta versions are still being signed by Apple. Overall, it's a very useful online tool that is worth bookmarking for your future iOS firmware reference.
In case you will need help on how to downgrade from iOS 7 beta to iOS 6.1.3 / 6.1.4, you can follow this complete guide.Contact Us for News Tips, Corrections and Feedback