The Apple company has launched iOS 8.1.1 beta on the 3-d of November, so you can using direct links download iOS 8.1.1 beta ipsw. iOS 8.1.1 beta was pushed with build number 12B432.
Here is short history review. iOS 8 was launched to the public on September 17th. iOS 8.0.1version followed it. But it was not perfect showing “No Service” reports. Then later on September 26th Apple pushed iOS 8.0.2, that fixed a number of bug fixes and got some improvements.
Not so much time past and Apple launched iOS 8.1, which enabled Apple Pay. It is Apple’s NFC-based mobile payment service that are available on the iPhone 6 and also on iPhone 6 Plus. So now owners of these two devices can purchase using Apple Pay with their Touch ID at NFC registers.
The update also fixed an Instant Hotspot feature, iCloud Photo Library that replaced Photo Stream, and return Camera Roll.
And now iOS 8.1.1 release mostly focused on performance improvements and bug fixes. Both the iPad 2 and iPhone 4s are oldest generation devices that support Apple’s latest mobile OS the iOS 8.1.1 performance is improved for them. There are also some tweaks to the Health App.
You can download iOS 8.1.1 beta ipsw from these compatible iDevices as iPod touch (5-th generation), iPad 2, iPad Air 2, iPad mini 3, iPad (3-d generation), iPad (4-th generation), iPad Air, iPad mini with Retina display, iPad mini, iPhone 6 Plus, iPhone 6, iPhone , iPhone 5s, iPhone 5c and iPhone 4S.
Download iOS 8.1.1 beta from the developer center