You cannot install unapproved or modified .ipa files on an official Apple operating system without bypassing code-signing restrictions. To install legacy IPAs, you must jailbreak your device. How to Jailbreak iOS 7.1.2
Install . This tweak tricks iOS into accepting unsigned IPA files.
Once you've acquired an IPA file, you'll need to install it. The method you choose depends on whether you want to jailbreak your device.
You cannot install unapproved or modified .ipa files on an official Apple operating system without bypassing code-signing restrictions. To install legacy IPAs, you must jailbreak your device. How to Jailbreak iOS 7.1.2
Install . This tweak tricks iOS into accepting unsigned IPA files.
Once you've acquired an IPA file, you'll need to install it. The method you choose depends on whether you want to jailbreak your device.