Updating to iphone 4 o
You'll find a number of sites offering links to the file you need.Make sure you get the right one for the device you use.Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).Would you like to answer one of these unanswered questions instead?You'll need about 2GB of free space to download the new OS.
Do it ahead of time to save yourself the headache of frantically deleting stuff.
Welcome to our i OS updating guide, in which we explain how to download and install the latest version of i OS - the software that runs on your i Phone and i Pad.
Apple's newest version of the i Phone and i Pad software - i OS 11 - arrived on 19 September 2017.
You can't upgrade an i Phone 4 to a newer version than 7.1.2. i OS 9 supports i Phone 4S to i Phone 6S Plus/i Phone SE.
An i OS support matrix is available here: i OS Support Matrix (additionally: pdf download) Thank you for your interest in this question.