This new version fix the FaceTime problem where a blank screen or frozen video would occur during a call. and it also fix specific to the iPad WiFi+3G model has been fixed which prevented some users from connecting to networks (this fix the international bugs only). a number of the some other security updates were baked in to the update which we suspect just seal a few security holes, perhaps to help prevent those who update from jailbreaking with the current methods.
Verizon iPhone 4 users have a different update (4.2.7).it is similar updates to that device, bar the iPad fixes of course.
For get this update, you need to connect your device up to iTunes and check for updates the usual way. this download took around 20 – 25 minutes to download and install.
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