How to downgrade iOS from 9.3.1 to 7.1 (default version)?
5405
Can I install any iOS version I wish by picking and choosing which firmware to restore?
149044
Can I downgrade to an earlier version of Android after installing an OTA update?
3873
Enterprise app deployment doesn't work on iOS 7.1
91095
How to install 2 versions of the same application on iOS?
22439
Updating iPhone with Jailbreak?
1772
iPad 1 update from 5.1.1 to 7.1
141295
Is a downgrade from Windows 8.1 Pro to Windows 7 Professional reversible?
2136
How to roll back Ubuntu to a previous version?
26773
How to downgrade a Windows Phone 8 app?
72320
How to install apps which require a newer version of iOS on a 1st gen. iPad?
138715
How to specify iOS hardware support?
67481
How to revert a do-release-upgrade?
41825
How to downgrade from 64-bit to 32-bit
22706
Target iOS Level with Xcode for Backward Compatability
5362
Will an iOS reinstall make a jailbroken iOS device "unjailbroken" and “supported by Apple” again?
211
Can I skip over releases when upgrading?
149625
Breakdown of iOS versions being used