Updating software on iphone 4
(There are 1000 megabytes in 1 gigabyte, so that’s not a lot of space.) To check how much space is available, do the following: There are two ways to update an i OS device: using i Tunes or within the Settings app.
If you find you’re getting errors when using i Tunes to update your i Phone, give the Settings app a shot.
It’s often seen as the final step in fixing software on a stuck i Phone.
If the DFU restore doesn’t work, there’s probably a hardware problem with your i Phone.
Next, check if your i Phone has enough room to store the update.
i OS updates generally require 750-800 megabytes of free space before they can be installed.
We saw this problem with Apple’s most recent major update: i OS 11.You'll need about 2GB of free space to download the new OS.Make some room by deleting photos and apps you no longer need.Plug your device into your computer, open i Tunes, select your device, and choose “Back Up Now” under the “Manually Back Up and Restore.”You won’t be able to get all of i OS 11’s sweet new features if your device isn't charged.You’ll also need to plug into an outlet and connect to Wi-Fi before you can start your download.