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iOS 6.1.1 has been released for iPhone 4S users only. The update is small but important, and is thought to resolve some ongoing network issues that the iOS 6.1 update brought for certain iPhone 4S devices on certain cell carriers, particularly in Europe. Users effected by the issue reported that after updating some iPhone devices to iOS 6.1, they could no longer place phone cals, send and receive text messages, or transmit data to and from the internet over cellular. Making matters stranger, the network problems appeared to be somewhat random.
The iOS 6.1.1 update is currently available only to iPhone 4S devices.
Download iOS 6.1.1
The easiest way to get iOS 6.1.1 is through OTA update, where it arrives as a small delta package around 20MB:
Open Settings, tap “Software Update”, and choose “Download and Install”
Alternatively, 6.1.1 firmware is also available for users who would rather update manually. Right-click the following link and choose “Save As”, the file should have a .ipsw extension and is downloaded directly from Apple’s servers:
iPhone 4S IPSW
A report late last week on MacRumors highlighted the issues for some iPhone users, noting that Vodafone in the UK went so far as to send text messages to iPhone customers to avoid the 6.1 update until a patch resolved the “3G performance issues”.
It is not clear if iOS 6.1.1 will roll out to other devices, or if it will be a limited bug fix release exclusively for the 4S.
